JP7304834B2 - seedling mat - Google Patents

Description

The present invention relates to a seedling mat.

The seedling mat described in Patent Document 1 comprises a lower layer, an intermediate layer and an upper layer. The upper layer has a plurality of seeding holes provided at predetermined intervals. Moreover, a slit is formed so as to surround the sowing hole. The slits are formed to divide the top layer into seed holes. The slits are formed in a grid pattern in plan view. By providing the slits, the seedlings can be smoothly scraped off by the planting claws of the rice transplanter, and the transplanting operation can be performed reliably.

JP 2019-146537 A

However, in the seedling mat described in Patent Document 1, the slits are notches. Therefore, the slits do not contribute to improving the air permeability of the seedling mat.

The present invention has been made in view of the above problems, and an object thereof is to provide a seedling mat capable of improving air permeability.

According to one aspect of the invention, seedling mats are sown with seeds. The seedling mat includes a nursery bed, a plurality of sowing holes for placing the seeds, and a depression. The seedbed has first and second main surfaces facing each other, and is made of a material that allows roots to grow. A plurality of sowing holes are provided in the seed bed. The recessed portion is provided at a different position from the plurality of sowing holes in the seedbed portion. Each of the plurality of seeding holes extends from the first main surface of the seedbed toward the second main surface. The recessed portion is recessed with respect to the first main surface of the seedbed portion.

ADVANTAGE OF THE INVENTION According to this invention, the seedling mat which can improve air permeability can be provided.

1 is a perspective view showing a seedling mat according to Embodiment 1 of the present invention; FIG. (a) is a plan view showing an enlarged seeding hole portion of the seedling mat according to Embodiment 1. FIG. (b) is a cross-sectional view taken along line IIB-IIB of (a). Fig. 2 is a perspective view showing a seedling mat according to Embodiment 2 of the present invention; (a) is a plan view showing an enlarged seeding hole portion of a seedling mat according to Embodiment 2. FIG. (b) is a cross-sectional view taken along line IVB-IVB of (a). Fig. 10 is a perspective view showing a seedling mat according to Embodiment 3 of the present invention; FIG. 12 is a perspective view showing the back surface of the seedling mat according to Embodiment 3; (a) is an enlarged plan view showing a seeding hole, a depression, and a first through-hole of a seedling mat according to Embodiment 3. FIG. (b) is a cross-sectional view along line VIIB-VIIB of (a). Fig. 10 is a plan view showing a seedling mat according to Embodiment 4 of the present invention; FIG. 9 is a cross-sectional view taken along line IX-IX of FIG. 8; FIG. 11 is a perspective view showing a seedling mat according to Embodiment 5 of the present invention; (a) is an enlarged plan view showing a seeding hole and a depression of a seedling mat according to Embodiment 5. FIG. (b) is a cross-sectional view taken along line XIB-XIB in (a). (a) is an enlarged plan view showing a seeding hole and a first through-hole of a seedling mat according to Embodiment 6 of the present invention. (b) is a cross-sectional view taken along line XIIB-XIIB of (a).

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated. Also, in the figure, the X-axis, Y-axis, and Z-axis of the three-dimensional orthogonal coordinate system are shown as appropriate for easy understanding.

(Embodiment 1)
A seedling mat 100 according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 2(b).

First, the seedling mat 100 will be described with reference to FIG. FIG. 1 is a perspective view showing a seedling mat 100 according to Embodiment 1. FIG. A plurality of seeds are sown on the seedling mat 100 shown in FIG. Hereinafter, the seed will be referred to as "seed SD". Seeds SD are, for example, vegetable seeds or paddy rice seeds. The seedling grown from the seed SD is scraped from the seedling mat 100 by the planting claw of the transplanting machine and planted in the farmland by the transplanting machine. For example, the planting claws of the transplanting machine scrape a portion of the seedling mat 100 in blocks together with the seedlings grown from the seed SD.

In the example of FIG. 1, the seedling mat 100 has a substantially cuboid shape (for example, a substantially rectangular plate shape). A seedling mat 100 includes a seedbed portion 1 and a plurality of seeding hole portions 3 . The seedbed part 1 has a substantially rectangular parallelepiped shape (for example, a substantially rectangular plate shape). The seedbed part 1 has a first main surface F1 and a second main surface F2. The first main surface F1 and the second main surface F2 face each other and are substantially parallel. For example, of the front surface and the rear surface of the seedbed part 1, the first main surface F1 corresponds to the front surface, and the second main surface F2 corresponds to the rear surface.

The seedbed part 1 is made of a material that allows the roots from the seed SD to grow. The seedbed part 1 contains at least an organic fiber material, for example. An organic fiber material is a fiber material composed of organic substances. Organic fibrous material is, for example, coco peat, peat moss or rice husk. Further, for example, the seedbed part 1 may contain binders, soil improvement materials, fertilizers, and/or soil.

A plurality of sowing holes 3 are provided in the seedbed portion 1 . Each of the plurality of seeding holes 3 is a hole for arranging seeds SD. Therefore, seeds SD are sown in each of the plurality of sowing holes 3 .

In the example of FIG. 1 , the plurality of seeding holes 3 are arranged in a substantially square lattice shape or a substantially rectangular lattice shape. Specifically, two or more seeding holes 3 are arranged on a straight line along the first direction D1. The seeding holes 3 adjacent to each other in the first direction D1 are arranged at intervals Lx. Moreover, two or more sowing holes 3 are arranged on a straight line along the second direction D2. The seeding holes 3 adjacent to each other in the second direction D2 are arranged with an interval Ly therebetween. The interval Lx and the interval Ly may be the same or different. The first direction D1 and the second direction D2 are substantially parallel to the first main surface F1. The first direction D1 and the second direction D2 are substantially orthogonal to each other.

Next, the seeding holes 3 will be described with reference to FIGS. 2(a) and 2(b). FIG. 2(a) is a plan view showing an enlarged seeding hole portion 3. FIG. FIG. 2(b) is a cross-sectional view taken along line IIB-IIB in FIG. 2(a).

As shown in FIG. 2(b), each of the plurality of seeding holes 3 extends from the first main surface F1 of the seedbed portion 1 toward the second main surface F2. Specifically, each of the plurality of sowing holes 3 extends from the first main surface F1 of the seedbed 1 in the predetermined direction D31. The predetermined direction D31 faces from the first main surface F1 of the seedbed portion 1 to the second main surface F2. In the example of FIG. 2B, the predetermined direction D31 is substantially orthogonal to the first main surface F1 and the second main surface F2. Therefore, the predetermined direction D31 is substantially orthogonal to the first direction D1 and the second direction D2 shown in FIG.

Specifically, the sowing hole 3 has a first hole 31 and a second hole 32 . The first hole portion 31 extends from the first main surface F1 of the seedbed portion 1 in the predetermined direction D31. The second hole portion 32 is arranged at a position more distant from the first main surface F1 of the seedbed portion 1 than the first hole portion 31 is. The second hole portion 32 is connected to the first hole portion 31 at the tip portion of the first hole portion 31 in the predetermined direction D31. That is, the second hole portion 32 extends in the predetermined direction D31 from the tip of the first hole portion 31 in the predetermined direction D31. The second hole portion 32 is tapered in the predetermined direction D31. That is, the hole width d2 of the second hole portion 32 narrows in the predetermined direction D31.

Therefore, according to Embodiment 1, the accuracy of the position of the seed SD in the sowing hole 3 can be improved. For example, variations in the positions of the seeds SD can be suppressed in the plurality of sowing holes 3 . If the accuracy of the position of the seed SD in the sowing hole 3 can be improved, the accuracy of the position of the seedling grown from the seed SD is also improved. Therefore, when the planting claws of the transplanting machine scrape the seedlings, breakage of the seedlings can be effectively suppressed.

In addition, according to Embodiment 1, the hole width d1 of the first hole portion 31 is constant in the predetermined direction D31. Therefore, it can control that opening PN of seeding hole part 3 becomes large excessively. As a result, it is possible to prevent the strength of the seedling mat 100 from decreasing. In this specification, the fact that the hole width d1 of the first hole portion 31 is constant is a concept that includes the fact that the hole width d1 is substantially constant. Moreover, the opening PN of the sowing hole 3 is the opening 31a of the first hole 31 on the first main surface F1 side.

In addition, when the sowing hole part as a reference example does not have the 1st hole part 31, and is comprised only with the 2nd hole part 32, a sowing hole part becomes substantially inverted cone shape, for example. Therefore, in the reference example, the opening of the seeding hole may become excessively large. As a result, in the reference example, the strength of the seedling mat may decrease. Moreover, if the openings of the sowing holes are excessively large, the openings of the sowing holes adjacent to each other may come into contact with each other. As a result, the strength of the seedling mat may be further reduced.

As described above with reference to FIG. 2B, according to Embodiment 1, it is possible to improve the accuracy of the position of the seed SD in the sowing hole portion 3 while suppressing a decrease in the strength of the seedling mat 100 .

Subsequently, details of the seeding holes 3 will be described with reference to FIGS. 2(a) and 2(b). The first hole portion 31 of the sowing hole portion 3 has a substantially columnar shape. Specifically, the first hole portion 31 has a wall surface W1 and a space SP1 surrounded by the wall surface W1. The wall surface W1 is a substantially cylindrical surface. Therefore, the space SP1 has a substantially columnar shape. The first hole portion 31 is line-symmetrical with respect to the axis AX of the sowing hole portion 3 . The axis AX is parallel to the predetermined direction D31. In the example of FIG.2(b), the axis line AX is a centerline which passes along the center of the seeding hole part 3. As shown in FIG. The axis AX corresponds to an example of the "axis of symmetry".

In the example of FIGS. 2(a) and 2(b), the first hole 31 has a substantially cylindrical shape. Therefore, the wall surface W1 is a substantially cylindrical surface. The space SP1 has a substantially cylindrical shape. The shape of the first hole portion 31 is not particularly limited as long as the hole width d1 of the first hole portion 31 is constant in the predetermined direction D31. For example, the first hole portion 31 may have a substantially prismatic shape, the wall surface W1 may have a substantially prismatic shape, and the space SP1 may have a substantially prismatic shape. For example, the shape of the first hole portion 31 in plan view may be symmetrical or asymmetrical. A symmetrical shape is, for example, a substantially circular shape, a substantially polygonal shape, or a substantially elliptical shape. In this specification, planar view indicates viewing an object from a predetermined direction D31. The hole width d1 indicates the length of the first hole portion 31 in the direction perpendicular to the predetermined direction D31. The hole width d1 is preferably larger than the minimum diameter of the seed SD. For example, in the case of an elongated seed SD (for example, a cucumber), even when "minimum diameter of seed SD<hole width d1<maximum diameter of seed SD", the seed SD passes through the first hole portion 31, 32 can be easily reached. In addition, for example, the hole width d1 may be larger than the maximum diameter of the seed SD. Also in this case, the seed SD can easily reach the second hole 32 through the first hole 31 .

The second hole 32 has a substantially conical shape. Specifically, the second hole portion 32 has a wall surface W2 and a space SP2 surrounded by the wall surface W2. The wall surface W2 is a substantially conical surface. Therefore, the space SP1 has a substantially pyramidal shape. In particular, the second hole portion 32 is preferably symmetrical with respect to the axis AX. According to this preferred example, the seed SD can be accurately arranged on the axis AX. Note that the second hole portion 32 may be asymmetric with respect to the axis AX as long as the hole width d2 of the second hole portion 32 narrows in the predetermined direction D31. In this case, for example, the position of the tip portion TP of the second hole portion 32 in the predetermined direction D31 is biased with respect to the axis AX. The hole width d2 indicates the length of the second hole portion 32 in the direction perpendicular to the predetermined direction D31.

In the example of FIGS. 2(a) and 2(b), the second hole 32 has a substantially conical shape. Therefore, the wall surface W2 is a substantially conical surface. The space SP2 has a substantially conical shape. The shape of the second hole portion 32 is not particularly limited as long as the hole width d2 of the second hole portion 32 narrows in the predetermined direction D31. For example, the second hole portion 32 may have a substantially pyramidal shape, the wall surface W2 may have a substantially pyramidal surface, and the space SP2 may have a substantially pyramidal shape. For example, the second hole portion 32 has a substantially truncated cone shape (for example, a substantially truncated cone shape or a substantially truncated pyramid shape), and the wall surface W2 has a substantially truncated cone surface (for example, a substantially truncated cone surface or a substantially truncated pyramid shape). surface), and the space SP2 may have a substantially truncated cone shape (for example, a substantially truncated cone shape or a substantially truncated pyramid shape). For example, the second hole portion 32 may have a substantially semispherical shape, the wall surface W2 may have a substantially semispherical surface, and the space SP2 may have a substantially semispherical shape. For example, the shape of the second hole portion 32 in plan view may be symmetrical or asymmetrical. A symmetrical shape is, for example, a substantially circular shape, a substantially polygonal shape, or a substantially elliptical shape.

In the example of FIG. 2B, the length H2 of the second hole portion 32 in the predetermined direction D31 is shorter than the length H1 of the first hole portion 31 in the predetermined direction D31. However, the length H2 may be longer than or equal to the length H1. Moreover, the seeding hole part 3 has depth DP3 from the 1st main surface F1. Depth DP3 is the sum of length H1 and length H2. That is, depth DP3 shows the length of seeding hole 3 in predetermined direction D31. The depth DP3 of the seeding hole portion 3 is smaller than the thickness t of the seedbed portion 1 . Therefore, the seeding holes 3 do not penetrate the seedbed 1 .

(Embodiment 2)
A seedling mat 100A according to Embodiment 2 of the present invention will be described with reference to FIGS. 3 to 4(b). Embodiment 2 is mainly different from Embodiment 1 in that the seeding hole portion 3A of the seedling mat 100A according to Embodiment 2 has extension portions 33 for facilitating seeding. In the following, differences of the second embodiment from the first embodiment will be mainly described.

First, the seedling mat 100A will be described with reference to FIG. FIG. 3 is a perspective view showing a seedling mat 100A according to Embodiment 2. FIG. As shown in FIG. 3, the seedling mat 100A includes a seedbed section 1 and a plurality of seeding holes 3A. The arrangement of the plurality of seeding holes 3A is the same as the arrangement of the plurality of seeding holes 3 described with reference to FIG.

Next, with reference to Drawing 4 (a) and Drawing 4 (b), seeding hole 3A is explained. Fig.4 (a) is a top view which expands and shows the seeding hole part 3A. FIG. 4(b) is a cross-sectional view taken along line IVB-IVB of FIG. 4(a).

As shown in FIGS. 4(a) and 4(b), each of the plurality of seeding holes 3A extends from the first main surface F1 of the seedbed portion 1 toward the second main surface F2. Specifically, each of the plurality of sowing hole portions 3A extends from the first main surface F1 of the seedbed portion 1 in the predetermined direction D31. Moreover, each of several sowing hole 3A further has the extension part 33 in addition to the 1st hole 31 and the 2nd hole 32. As shown in FIG. The extension part 33 is arranged at a position closer to the first main surface F<b>1 of the seedbed part 1 than the first hole part 31 . The extending portion 33 extends from the opening edge 31b of the first hole portion 31 on the first main surface F1 side to the first main surface F1 toward the outside in the radial direction RD with respect to the axis AX of the sowing hole portion 3A. Therefore, according to Embodiment 2, the seeds SD can be easily put into the seeding holes 3A. That is, it is easy to sow seeds SD into the sowing hole 3A. In addition, the seedling mat 100A according to the second embodiment has the same effects as the seedling mat 100 according to the first embodiment.

Moreover, in Embodiment 2, although 3 A of sowing holes have the extension part 33, it can suppress that opening PN of 3 A of sowing holes becomes large excessively. This is because the hole width d1 of the first hole portion 31 connected to the extension portion 33 is constant. In Embodiment 2, since it can suppress that opening PN of 3 A of sowing holes becomes large excessively, it can suppress that opening PN of 3 A of sowing holes which adjoin mutually contact. As a result, it is possible to suppress a decrease in the strength of the seedling mat 100A.

In particular, in Embodiment 2, it is preferable that the extension portion 33 has an inclined surface W3. The inclined surface W3 is inclined from the first main surface F1 of the seedbed portion 1 toward the opening edge 31b of the first hole portion 31 . Therefore, according to this preferred example, it is easier to sow the seeds SD into the sowing holes 3A. For example, the extended portion 33 guides the seed SD to the first hole portion 31 and the second hole portion 32 . The inclined surface W3 may be curved. The extending portion 33 may have a flat surface substantially parallel to the first main surface F1.

Moreover, it is more preferable that the extending portion 33 is provided along the opening edge 31b of the first hole portion 31 over the entire circumference of the opening edge 31b. That is, it is more preferable that the extended portion 33 surrounds the opening edge 31b of the first hole portion 31 along the opening edge 31b. In this case, the extending portion 33 widens from the opening edge 31b toward a direction D32 opposite to the predetermined direction D31. Therefore, it is easier to sow the seeds SD into the sowing holes 3A. The extending portion 33 may be partially provided corresponding to a part of the opening edge 31 b of the first hole portion 31 .

More specifically, the width d3 of the extending portion 33 widens in the direction D32 opposite to the predetermined direction D31. The width d3 indicates the distance between two points on the extended portion 33 that face each other in the radial direction RD via the axis AX. The inclined surface W3 of the extension portion 33 is a substantially truncated conical surface (for example, substantially truncated conical surface or substantially truncated pyramidal surface). The extending portion 33 is line-symmetrical with respect to the axis AX. Note that as long as the extension portion 33 extends from the opening edge 31b outward in the radial direction RD to the first main surface F1, the extension portion 33 may be asymmetrical with respect to the axis AX. The shape of the portion 33 is not particularly limited. For example, the shape of the extending portion 33 in plan view may be symmetrical or asymmetrical. A symmetrical shape is, for example, a substantially circular ring shape or a substantially angular ring shape.

In the example of FIG. 4B, the length H3 of the extension portion 33 in the predetermined direction D31 is shorter than the length H1 of the first hole portion 31 and shorter than the length H2 of the second hole portion 32. . However, the relationship between the length H1, the length H2, and the length H3 is not particularly limited. For example, the length H3 may be longer than the length H1, or the length H3 may be longer than the length H2. Moreover, 3 A of sowing holes have depth DP3 from the 1st main surface F1. Depth DP3 is the sum of length H3, length H1, and length H2. That is, depth DP3 shows the length of seeding hole 3A in predetermined direction D31. The depth DP3 of the seeding hole 3A is smaller than the thickness t of the seedbed 1. Therefore, the sowing hole portion 3A does not penetrate the seedbed portion 1. As shown in FIG.

(Embodiment 3)
A seedling mat 100B according to Embodiment 3 of the present invention will be described with reference to FIGS. 5 to 7B. The third embodiment is mainly different from the second embodiment in that the seedling mat 100B according to the third embodiment includes the depressions 5 and the first through holes 7 for the seeding holes 3A. In the following, differences of the third embodiment from the second embodiment will be mainly described.

First, the seedling mat 100B will be described with reference to FIGS. 5 and 6. FIG. FIG. 5 is a perspective view showing a seedling mat 100B according to Embodiment 3. FIG. As shown in FIG. 5, the seedling mat 100B includes a seedbed portion 1, a plurality of seeding holes 3A, and at least one hollow portion 5. As shown in FIG. In the example of FIG. 5, the seedling mat 100B has a plurality of depressions 5. As shown in FIG. Each of the plurality of depressions 5 is provided at a different position from the plurality of seeding holes 3A in the seedbed portion 1 . That is, the hollow part 5 and the sowing hole part 3A are separated.

Each of the plurality of recessed portions 5 is recessed from the first main surface F1 of the seedbed portion 1 in a predetermined direction D31. That is, each of the plurality of recessed portions 5 is recessed with respect to the first main surface F1 of the seedbed portion 1 . Therefore, in Embodiment 3, the air permeability of the seedbed part 1 is improved through the recessed part 5 . For example, even when excessive moisture exists near the seeds SD placed in the sowing hole 3A and inside the seedbed 1, the improvement of the air permeability of the seedbed 1 promotes the evaporation of excess moisture. can. As a result, it is possible to suppress a decrease in the germination rate of seeds SD due to excessive moisture. In addition, it is possible to suppress the elongation of seedlings sprouted from seeds SD due to excessive moisture. In addition, the seedling mat 100B according to the third embodiment has the same effect as the seedling mat 100A according to the second embodiment.

In particular, in Embodiment 3, each of the plurality of recessed portions 5 preferably extends from one edge 1A of the seedbed portion 1 to the other edge 1B along the first main surface F1 of the seedbed portion 1 . According to this preferred example, the air permeability of the seedbed section 1 is further improved through the recessed section 5 . As a result, for example, it is possible to further suppress a decrease in the germination rate of seeds SD and further suppress the elongation of seedlings sprouted from seeds SD. Moreover, the drainage of the seedbed part 1 can be improved by the recessed part 5 .

In the example of FIG. 5, each of the plurality of recessed portions 5 has a substantially groove shape and extends substantially linearly along the first direction D1. The plurality of recessed portions 5 are arranged in the second direction D2 with an interval Lya therebetween. The plurality of recessed portions 5 are substantially parallel. A plurality of seeding holes 3A are arranged in a straight line along the first direction D1 between the depressions 5 adjacent to each other.

In addition, the shape of the recessed part 5 is not specifically limited as long as the recessed part 5 is recessed with respect to the 1st main surface F1. For example, the recessed portion 5 does not have to extend from the one edge 1A of the seedbed portion 1 to the other edge 1B. For example, the recess 5 may be segmented. In this case, the seedling mat 100B may have a plurality of segment-shaped recesses 5. FIG. For example, the depressions 5 may be substantially grid-like. For example, the recessed portion 5 may be a substantially hemispherical recessed hole portion, a substantially semi-ellipsoidal recessed hole portion, a substantially cone-shaped recessed hole portion, or a substantially frustum-shaped recessed hole portion. may In this case, the seedling mat 100B may have a plurality of depressions 5 that are holes.

FIG. 6 is a perspective view showing the rear surface of the seedling mat 100B according to Embodiment 3. FIG. As shown in FIG. 6, the seedling mat 100B further includes a plurality of first through-holes 7. As shown in FIG. A plurality of 1st penetration holes 7 are arranged corresponding to a plurality of seeding holes 3A shown in Drawing 5, respectively.

Next, the first through hole portion 7 will be described with reference to FIGS. 7(a) and 7(b). Fig.7 (a) is a top view which expands and shows the hollow part 5, the seeding hole part 3A, and the 1st through-hole part 7. FIG. In FIG. 7(a), the recessed portion 5 is hatched with dots for clarity of the drawing. FIG. 7(b) is a cross-sectional view taken along line VIIB--VIIB of FIG. 7(a).

As shown in FIG.7(b), the 1st through-hole part 7 is arrange|positioned for every several sowing hole part 3A. The first through hole portion 7 is connected to the sowing hole portion 3A. The first through hole portion 7 has a through space SP7.

Specifically, the first through-hole portion 7 is provided at a position more distant from the first main surface F1 of the seedbed portion 1 than the second hole portion 32 is. The first through hole portion 7 is connected to the second hole portion 32 . The first through hole portion 7 extends from the second hole portion 32 to the second main surface F2 of the seedbed portion 1 . Therefore, according to Embodiment 3, the water permeability of the seedling mat 100B can be improved through the first through-holes 7 . For example, when watering the seeding holes 3A, excess water can be discharged from the seeding holes 3A to the outside of the seedling mat 100B through the first through-holes 7 . Therefore, it is possible to suppress the seeds SD from being flooded in the sowing hole portion 3A. As a result, the germination rate of seeds SD can be improved. In addition, the air permeability of the seedling mat 100B can be further improved by the first through-holes 7 .

Preferably, the first through hole portion 7 is connected to the second hole portion 32 at the tip portion TP of the second hole portion 32 in the predetermined direction D31. And the 1st through-hole part 7 is extended from the front-end|tip part TP of the 2nd hole 32 to the 2nd main surface F2 of the seedbed part 1. As shown in FIG. In this preferred example, the water permeability of the seedling mat 100B can be further improved through the first through-holes 7 . This is because moisture tends to collect toward the tip portion TP by the second hole portion 32 . For example, when watering the seeding holes 3A, excess water can be effectively discharged from the seeding holes 3A to the outside of the seedling mat 100B through the first through-holes 7 . In addition, as long as the 1st through-hole part 7 is extended from the 2nd hole part 32 to the 2nd main surface F2, the connection location of the 1st through-hole part 7 and the 2nd hole part 32 is not specifically limited. For example, the first through hole portion 7 may extend from the wall surface W2 of the second hole portion 32 to the second main surface F2.

Further, in the example of FIG. 7B, the hole width d7 of the first through-hole portion 7 is equal to or less than the minimum value of the hole width d2 of the second hole portion 32. As shown in FIG. Specifically, the hole width d7 of the first through hole portion 7 is smaller than the minimum diameter of the seed SD. Therefore, it is possible to suppress the seed SD from entering the through space SP7 of the first through hole portion 7 . The hole width d7 of the first through-hole portion 7 is preferably 1/2 or less of the minimum diameter of the seed SD. According to this preferred example, it is possible to more effectively suppress the seed SD from entering the through space SP7 of the first through hole portion 7 . The hole width d7 indicates the length of the first through hole portion 7 in the direction orthogonal to the predetermined direction D31.

Furthermore, the first through-hole portion 7 extends substantially linearly in the predetermined direction D31. The shape of the first through-hole portion 7 is not particularly limited as long as the first through-hole portion 7 extends from the second hole portion 32 to the second main surface F2. For example, the shape of the first through-hole portion 7 in plan view may be symmetrical or asymmetrical. A symmetrical shape is, for example, a substantially circular shape, a substantially polygonal shape, or a substantially elliptical shape.

The details of the recessed portion 5 will be described with reference to FIG. 7(b). The hollow portion 5 has a hollow space SP5. The recessed portion 5 is separated from the sowing hole portion 3A (specifically, the extension portion 33) with an interval Lyb in the second direction D2. Moreover, it is preferable that the depth DP5 of the hollow portion 5 with respect to the first main surface F1 of the seedbed portion 1 is deeper than the depth DP3 of the sowing hole portion 3A with respect to the first main surface F1 of the seedbed portion 1 . According to this preferred example, when excessive moisture is present in the sowing hole 3A, the moisture in the sowing hole 3A tends to move toward the depression 5 due to gravity. That is, the excess moisture in the sowing hole portion 3A can be effectively discharged. As a result, for example, it is possible to further suppress a decrease in the germination rate of seeds SD and further suppress the elongation of seedlings sprouted from seeds SD. Moisture that has moved from the sowing hole portion 3A to the recessed portion 5 is discharged to the outside of the seedling mat 100B through the recessed portion 5 . Specifically, the moisture that has moved from the sowing hole portion 3A to the recessed portion 5 is discharged to the outside of the seedling mat 100B through the recessed space SP5 of the recessed portion 5 .

In the example of FIG. 7B, the shape of the recessed portion 5 has a substantially U shape (for example, a substantially angular U shape) in a cross-sectional view. In this specification, a cross-sectional view indicates viewing an object by cutting the object along an imaginary plane perpendicular to the first main surface F1. In addition, the shape of the recessed part 5 is not specifically limited as long as the recessed part 5 is recessed with respect to the 1st main surface F1. For example, the shape of the recessed portion 5 may have a substantially V shape in a cross-sectional view.

In addition, in the example of FIG. 7B, the width d5 of the recessed portion 5 is substantially the same as the hole width d1 of the first hole portion 31 . However, as long as the recessed portion 5 and the sowing hole portion 3A are separated, the width d5 of the recessed portion 5 may be larger than the hole width d1 of the first hole portion 31, or smaller than the hole width d1. good too. The width d5 indicates the length of the recessed portion 5 in the direction orthogonal to the predetermined direction D31. Further, the depth DP5 of the recessed portion 5 may be substantially the same as the depth DP3 of the sowing hole portion 3A, or the depth DP5 of the recessed portion 5 may be shallower than the depth DP3 of the sowing hole portion 3A. Depth DP5 indicates the length of recessed portion 5 in predetermined direction D31. Depth DP5 of recessed portion 5 is smaller than thickness t of seedbed portion 1 . Therefore, the recessed portion 5 does not penetrate the seedbed portion 1 .

Further, in Embodiment 3, the seedling mat 100B may not have one or both of the extended portion 33 and the first through-hole portion 7 . Alternatively, the seedling mat 100B may not have one or both of the extended portion 33 and the recessed portion 5 .

(Embodiment 4)
A seedling mat 100C according to Embodiment 4 of the present invention will be described with reference to FIGS. 8 and 9. FIG. The fourth embodiment is mainly different from the third embodiment in that the seedling mat 100C according to the fourth embodiment includes the second through holes 9 for the depressions 5 . In the following, differences of the fourth embodiment from the third embodiment will be mainly described.

First, the seedling mat 100C will be described with reference to FIG. FIG. 8 is a plan view showing a seedling mat 100C according to Embodiment 4. FIG. In FIG. 8, the depression 5 is hatched with dots for clarity of the drawing. As shown in FIG. 8, the seedling mat 100C has at least one second through hole 9. As shown in FIG. In the example of FIG. 8 , the seedling mat 100C has a plurality of second through-holes 9 . Two or more second through holes 9 are arranged for each of the plurality of recesses 5 . Two or more second through holes 9 are arranged along each of the plurality of recessed portions 5 . In addition, one second through-hole portion 9 may be arranged in one recess portion 5 .

Next, the details of the second through-hole portion 9 will be described with reference to FIG. 9 . 9 is a cross-sectional view taken along line IX-IX in FIG. 8. FIG. As shown in FIG. 9, the second through hole portion 9 has a through space SP9. The second through-hole portion 9 is provided at a position more distant from the first main surface F1 of the seedbed portion 1 than the depression portion 5 is. The second through hole portion 9 is connected to the recessed portion 5 . The second through hole portion 9 extends from the depression portion 5 to the second main surface F2 of the seedbed portion 1 . Therefore, according to the fourth embodiment, the water accumulated in the depressions 5 can be effectively discharged to the outside of the seedling mat 100C through the second through holes 9 . For example, when the seedling mat 100C is watered, the water accumulated in the depressions 5 can be effectively discharged to the outside of the seedling mat 100C through the second through holes 9 . In addition, the air permeability of the seedling mat 100C can be improved by the second through-holes 9 . In addition, the seedling mat 100C according to the fourth embodiment has the same effect as the seedling mat 100B according to the third embodiment.

Preferably, the second through hole portion 9 connects to the recessed portion 5 at the bottom portion 51 of the recessed portion 5 . Second through-hole portion 9 extends from bottom portion 51 of recessed portion 5 to second main surface F2 of seedbed portion 1 . In this preferred example, the water accumulated in the depressions 5 can be more effectively discharged to the outside of the seedling mat 100C through the second through holes 9 . This is because the water accumulated in the recessed portion 5 is collected at the bottom portion 51 . In addition, as long as the 2nd through-hole part 9 is extended from the hollow part 5 to the 2nd main surface F2, the connection location of the 2nd through-hole part 9 and the hollow part 5 is not specifically limited. For example, the second through hole portion 9 may extend from the wall surface W5 of the recessed portion 5 to the second main surface F2.

9, the hole width d9 of the second through-hole portion 9 is smaller than the width d5 of the recessed portion 5. As shown in FIG. However, the hole width d9 of the second through-hole portion 9 may be substantially the same as the width d5 of the recessed portion 5 or may be larger than the width d5 of the recessed portion 5 . The hole width d9 indicates the length of the second through hole portion 9 in the direction orthogonal to the predetermined direction D31. Further, the second through-hole portion 9 extends substantially linearly in the predetermined direction D31. However, the shape of the second through-hole portion 9 is not particularly limited as long as the second through-hole portion 9 extends from the recessed portion 5 to the second main surface F2. For example, the shape of the second through-hole portion 9 in plan view may be symmetrical or asymmetrical. A symmetrical shape is, for example, a substantially circular shape, a substantially polygonal shape, or a substantially elliptical shape.

Further, in Embodiment 4, the seedling mat 100C does not have to have one or both of the extended portion 33 and the first through-hole portion 7 .

(Embodiment 5)
A seedling mat 100D according to Embodiment 5 of the present invention will be described with reference to FIGS. 10 to 11(b). Embodiment 5 mainly differs from Embodiment 1 described with reference to FIGS. The following mainly describes the differences of the fifth embodiment from the first embodiment.

First, the seedling mat 100D will be described with reference to FIG. FIG. 10 is a perspective view showing a seedling mat 100D according to Embodiment 5. FIG. As shown in FIG. 10, the seedling mat 100D includes a seedbed portion 1, a plurality of seeding holes 3B, and at least one hollow portion 5. As shown in FIG. In the example of FIG. 10, the seedling mat 100D has a plurality of depressions 5. As shown in FIG. Each of the plurality of recessed portions 5 is provided at a position different from that of the plurality of sowing holes 3B in the seedbed portion 1 . In addition, the configuration and arrangement of the recessed portion 5 according to the fifth embodiment are the same as the configuration and arrangement of the recessed portion 5 according to the third embodiment described with reference to FIGS. 5 and 7B.

A plurality of seeding holes 3B are provided in the seedbed section 1 . Each of the plurality of seeding holes 3B is a hole for arranging seeds SD. The arrangement of the plurality of sowing holes 3B is the same as the arrangement of the plurality of sowing holes 3 described with reference to FIG. 1 and the arrangement of the plurality of sowing holes 3A described with reference to FIG.

Next, the seeding holes 3B and the depressions 5 will be described with reference to FIGS. 11(a) and 11(b). FIG. 11(a) is a plan view showing an enlarged seeding hole portion 3B and a hollow portion 5. FIG. In FIG. 11(a), the depression 5 is hatched with dots for clarity. FIG. 11(b) is a cross-sectional view taken along line XIB-XIB in FIG. 11(a).

As shown in FIG. 11(b), each of the plurality of seeding holes 3B extends from the first main surface F1 of the seedbed 1 toward the second main surface F2. Specifically, each of the plurality of seeding holes 3B extends from the first main surface F1 of the seedbed 1 in the predetermined direction D31. In addition, the structure of the sowing hole 3B is the same as the structure of the 1st hole 31 demonstrated with reference to FIG.2(b). For example, the hole width d1 of the sowing hole portion 3B is preferably larger than the minimum diameter of the seed SD. In addition, for example, the hole width d1 of the sowing hole portion 3B may be larger than the maximum diameter of the seed SD. However, in Embodiment 5, the seeding hole part 3B has a bottom surface BM in addition to the wall surface W1. A seed SD is placed on the bottom surface BM. Further, in Embodiment 5, as long as the seedling mat 100D includes the depressions 5, the configuration of the seeding holes 3B is not limited to the configuration of the first holes 31 described with reference to FIG. Any configuration is possible. For example, the seeding hole portion 3B has a substantially columnar shape (for example, a substantially cylindrical shape or a substantially prismatic shape), a substantially pyramidal shape (for example, a substantially conical shape or a substantially pyramidal shape), or a substantially frustum shape (for example, a substantially truncated cone shape or approximately truncated pyramid shape).

Each of the plurality of recessed portions 5 is recessed with respect to the first main surface F1 of the seedbed portion 1 . Therefore, according to the fifth embodiment, as in the third embodiment, the air permeability of the seedbed section 1 is improved through the recessed section 5 . The effect of improving the air permeability of the seedbed portion 1 is the same as the effect of the hollow portion 5 of the third embodiment. Further, in Embodiment 5, as in Embodiment 3, each of the plurality of depressions 5 extends along the first main surface F1 of the seedbed 1 from one edge 1A to the other edge 1B of the seedbed 1. is preferred. The effect in this case is the same as the effect of the recessed portion 5 of the third embodiment. Furthermore, in Embodiment 5, as in Embodiment 3, the depth DP5 of the recessed portion 5 with respect to the first main surface F1 of the seedbed portion 1 is the depth of the sowing hole portion 3B with respect to the first main surface F1 of the seedbed portion 1. Deeper than DP3 is preferred. The effect in this case is the same as the effect of the recessed portion 5 of the third embodiment. The recessed portion 5 is separated from the seeding hole portion 3B with an interval Lyb in the second direction D2.

The depth DP5 of the depression 5 may be substantially the same as the depth DP3 of the seeding hole 3B, or the depth DP5 of the depression 5 may be shallower than the depth DP3 of the seeding hole 3B.

In Embodiment 5, the seedling mat 100D may have one or both of the first through-hole portion 7 and the second through-hole portion 9 described with reference to FIG. When the seedling mat 100D has the first through-holes 7 described with reference to FIG. 9, the first through-holes 7 are connected to the seeding hole 3B (specifically, the bottom surface BM) shown in FIG. 11(b). . This point is the same as in Embodiment 6, which will be described later. Further, from the viewpoint of the fifth embodiment, the sowing hole portion 3A has the second hole portion 32 and the extension portion 33 in the third and fourth embodiments described with reference to FIGS. You don't have to. That is, in Embodiments 3 and 4 described with reference to FIGS. 3B.

(Embodiment 6)
A seedling mat 100E according to Embodiment 6 of the present invention will be described with reference to FIGS. 12(a) and 12(b). In that the seedling mat 100E according to Embodiment 6 includes the first through-hole portions 7 similar to those in FIG. differ mainly from The following mainly describes the differences of the sixth embodiment from the first embodiment. 1 and 6 will be referred to as appropriate in the description of the sixth embodiment.

FIG. 12(a) is an enlarged plan view showing the seeding hole portion 3B and the first through hole portion 7 of the seedling mat 100E according to Embodiment 6. FIG. As shown in FIG. 12( a ), the seedling mat 100E includes a seedbed section 1 . Also, the seedling mat 100E includes a plurality of seeding holes 3B shown in FIG. 12(a) instead of the plurality of seeding holes 3 of the seedling mat 100 shown in FIG. Furthermore, the seedling mat 100E includes a plurality of first through-holes 7 shown in FIG. A plurality of 1st penetration holes 7 are provided corresponding to a plurality of seeding holes 3B, respectively.

FIG. 12(b) is a cross-sectional view along line XIIB-XIIB of FIG. 12(a). As shown in FIG.12(b), the structure of the sowing hole part 3B which concerns on Embodiment 6 is the same as that of the structure of the sowing hole part 3B shown in FIG.11(b). Moreover, the configuration of the first through-hole portion 7 according to Embodiment 6 is the same as the configuration of the first through-hole portion 7 shown in FIG. 7(b).

Specifically, the 1st through-hole part 7 is provided in the position separated from the 1st main surface F1 of the seedbed part 1 rather than the sowing hole part 3B. The first through hole portion 7 is connected to the sowing hole portion 3B. And the 1st through-hole part 7 is extended to the 2nd main surface F2 of the seedbed part 1. As shown in FIG. Therefore, according to Embodiment 6, the water permeability of the seedling mat 100E can be improved through the first through-holes 7 . The effect of improving the water permeability of the seedling mat 100E is the same as the effect of the first through-holes 7 of the third embodiment. In addition, the air permeability of the seedling mat 100E can be improved by the first through-holes 7 .

Preferably, the 1st through-hole part 7 is connected with the sowing hole part 3B in the bottom face BM of the sowing hole part 3B. And the 1st through-hole part 7 is extended to the 2nd main surface F2 of the seedbed part 1 from the bottom face BM of the sowing hole part 3B. The effect in this case is the same as the effect of the first through-hole portion 7 of the third embodiment. In addition, as long as the 1st through-hole part 7 is extended from the sowing hole part 3B to the 2nd main surface F2, the connection location of the 1st through-hole part 7 and the sowing hole part 3B is not specifically limited. For example, the first through hole portion 7 may extend from the wall surface W1 of the sowing hole portion 3B to the second main surface F2.

Moreover, in the example of FIG.12(b), the hole width d7 of the 1st through-hole part 7 is smaller than the size of bottom face BM of the sowing hole part 3B. That is, the hole width d7 of the 1st through-hole part 7 is smaller than the hole width d1 of the sowing hole part 3B. Specifically, the hole width d7 of the first through hole portion 7 is smaller than the minimum diameter of the seed SD. Therefore, it is possible to suppress the seed SD from entering the through space SP7 of the first through hole portion 7 . The hole width d7 of the first through-hole portion 7 is preferably 1/2 or less of the minimum diameter of the seed SD. According to this preferred example, it is possible to more effectively suppress the seed SD from entering the through space SP7 of the first through hole portion 7 . In addition, in the example of FIG.12(b), the bottom face BM is a substantially flat surface.

In addition, in Embodiment 6, the seedling mat 100E may have the recessed part 5 demonstrated with reference to FIG.7(b) and FIG.11(b). In this case, the recessed portion 5 may have the second through hole portion 9 described with reference to FIG. 9 .

EXAMPLES Next, the present invention will be specifically described based on examples, but the present invention is not limited by the following examples.

Examples 1 to 4 of the present invention and comparative examples will be described.

(Example 1: with depression, with through hole, depression depth > seeding hole depth)
As the seedling mat according to Example 1, the seedling mat 100B described with reference to FIGS. 5 to 7B was used. However, the seedling mat according to Example 1 had seeding holes 3B shown in FIG. 11(b) instead of the seeding holes 3A shown in FIG. 7(b). That is, the seedling mat according to Example 1 had a configuration in which the first through-hole portions 7 of FIG. 12(b) were added to the seedling mat 100D of FIG. 11(b).

(Example 2: with depression, without through hole, depression depth > seeding hole depth)
As a seedling mat according to Example 2, a seedling mat 100D shown in FIG. 11(b) was used. In Example 2, the depth DP5 of the depression 5 was deeper than the depth of the seeding hole 3B.

(Example 3: with depressions, without through holes, depression depth <seeding hole depth)
As a seedling mat according to Example 3, a seedling mat 100D shown in FIG. 11(b) was used. However, in Example 3, the depth DP5 of the depression 5 was shallower than the depth of the seeding hole 3B.

(Example 4: no dent, with through holes)
As a seedling mat according to Example 4, a seedling mat 100E shown in FIG. 12(b) was used.

(Comparative example: no dent, no through hole)
As a seedling mat according to a comparative example, a seedling mat obtained by omitting the first through-holes 7 from the seedling mat 100E shown in FIG. 12(b) was used.

(Other conditions of Examples 1 to 4 and Comparative Examples)
In the seedling mats according to Examples 1 to 4 and the comparative example, the composition of the seedbed portion 1 was the same.

The dimensions of the seedling mats in Examples 1 to 4 and Comparative Example will be described with reference to FIGS. 10, 11(b) and 12(b). The thickness t of the seedbed portion 1 was 30 mm. The depth DP3 of the seeding hole 3A was 10 mm. The hole width d1 of the sowing hole portion 3A was 6 mm. The width d5 of the recessed portion 5 was 6 mm. The hole width d7 of the first through hole portion 7 was 2 mm. The interval Lyb between the recessed portion 5 and the seeding hole portion 3A was 8.5 mm. The interval Lya between the recessed portions 5 adjacent to each other was 29 mm. The depth DP5 of the recessed portion 5 of Example 2 was 15 mm. The depth DP5 of the recessed portion 5 of Example 3 was 15 mm.

Cabbage seeds were used as seed SD. Then, 30 seeding holes 3B were provided for each of Examples 1 to 4 and Comparative Example, and germination of seeds SD was observed for 25 days.

(Results of Examples 1 to 4 and Comparative Example)
The observation results of germination on seedling mats in Examples 1 to 4 and Comparative Example are shown in the table below. In all of Examples 1 to 4, the number of germination was larger than that of Comparative Example. The germination number of Example 1 was the largest. The germination number of Example 4 was the second highest. The germination number of Example 2 was the third largest. The germination number of Example 3 was the fourth largest.

The embodiments and examples of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above embodiments and examples, and can be embodied in various aspects without departing from the spirit of the present invention. Also, the plurality of constituent elements disclosed in the above embodiments can be modified as appropriate. For example, some of all the components shown in one embodiment may be added to the components of another embodiment, or some configurations of all the components shown in one embodiment may be added. Elements may be deleted from the embodiment.

In addition, the drawings schematically show each component mainly for easy understanding of the invention, and the thickness, length, number, spacing, etc. It may be different from the actual one due to the convenience of Further, the configuration of each component shown in the above embodiment is an example and is not particularly limited, and it goes without saying that various modifications are possible within a range that does not substantially deviate from the effects of the present invention. .

The present application further discloses the following remarks. Note that the following notes do not limit the present invention.

(Appendix: Mainly corresponds to Embodiment 6)
A seedling mat on which seeds are sown, comprising:
a seedbed portion having first and second main surfaces facing each other and made of a material that allows roots to grow;
a plurality of sowing holes provided in the seedbed for arranging the seeds;
and a plurality of first through-holes respectively provided corresponding to the plurality of seeding holes,
The first through-hole portion is connected to the seeding hole portion and extends to the second main surface of the seedbed portion.

INDUSTRIAL APPLICABILITY The present invention relates to seedling mats and has industrial applicability.

1 seedbed part 3, 3A, 3B seeding hole part 5 depression part 7 first through hole part 9 second through hole part 100, 100A to 100E seedling mat SD seed

Claims (7)

A seedling mat on which seeds are sown, comprising:
a seedbed portion having first and second main surfaces facing each other and made of a material that allows roots to grow;
a plurality of sowing holes provided in the seedbed for arranging the seeds;
a depression provided at a position different from the plurality of seeding holes in the seedbed,
each of the plurality of seeding holes extends from the first main surface of the seedbed toward the second main surface;
the recessed portion is recessed with respect to the first main surface of the seedbed;
The material of the nursery section is exposed in the hollow space of the hollow section,
Further comprising a second through-hole portion connected to the recessed portion,
The seedling mat , wherein the second through-hole portion extends to the second main surface of the seedbed portion . Further comprising a first through hole connected to the seeding hole,
2. The seedling mat of claim 1, wherein said first through-hole portion extends to said second major surface of said seedbed portion. 3. The seedling mat according to claim 1 or 2 , wherein the recessed portion extends from one edge to the other edge of the seedbed portion along the first main surface of the seedbed portion. 4. Any one of claims 1 to 3 , wherein the depth of the recess with respect to the first main surface of the seedbed is greater than the depth of the seeding hole with respect to the first main surface of the seedbed. seedling mat described in . 5. A seedling mat according to any one of claims 1 to 4 , wherein the material of the seedbed portion comprises coco peat, peat moss or rice husk. A plurality of the depressions are provided in the seedbed,
Each of the plurality of recessed portions linearly extends along the first main surface of the seedbed portion from one edge to the other edge of the seedbed portion along the first direction,
the plurality of recessed portions are spaced apart from each other in a second direction orthogonal to the first direction;
A predetermined number of the seeding holes are arranged in a straight line along the first direction between the recesses adjacent to each other,
The seedling mat according to any one of claims 1 to 5 , wherein the depression is not arranged between the seeding holes adjacent to each other in the first direction. A seedling mat on which seeds are sown, comprising:
a seedbed portion having first and second main surfaces facing each other and made of a material that allows roots to grow;
a plurality of sowing holes provided in the seedbed for arranging the seeds;
In the seedbed portion, a depression portion provided at a position different from the plurality of seeding holes
with
each of the plurality of seeding holes extends from the first main surface of the seedbed toward the second main surface;
the recessed portion is recessed with respect to the first main surface of the seedbed;
The material of the nursery section is exposed in the hollow space of the hollow section,
A plurality of the depressions are provided in the seedbed,
Each of the plurality of recessed portions linearly extends along the first main surface of the seedbed portion from one edge to the other edge of the seedbed portion along the first direction,
the plurality of recessed portions are spaced apart from each other in a second direction orthogonal to the first direction;
A predetermined number of the seeding holes are arranged in a straight line along the first direction between the recesses adjacent to each other,
The seedling mat, wherein the depression is not arranged between the seeding holes adjacent to each other in the first direction.

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