JP4400928B2 - Soil-filled soil injection mat and slope forestation method using it - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a soil-injection mat for seedlings and a slope forestation method using the mat.

Conventionally, when planting a seedling on a slope, a mulching sheet covering the ground around the seedling is known to prevent germination of weeds that hinder the growth of the seedling (for example, Patent Document 1). reference).
JP 2001-275497 A (pages 2 to 4, FIG. 1)

  In the slope forestation method using the mulching sheet, first, it was necessary to dig a natural ground in advance and plant seedlings, and then backfill the local soil or pile up the soil. However, digging in advance for each seedling to be planted on the sloped ground is time consuming to construct and soiling the soil. For example, if the soil is mud and contains moisture, the soil is shaped. It was difficult and construction was difficult.

  Therefore, the main problem of the present invention is to provide a soil-injection mat for seedlings capable of converting the ground into a forest with good construction efficiency, and a slope reforestation method using the same.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
The invention described in claim 1 is a seedling injection mat for seedlings comprising at least a mulching sheet having light-shielding properties and water impermeability, and a bag formed from a net-like sheet, wherein the mulching sheet comprises: A nursery soil pouring mat for seedlings, which is attached to the bag so as to cover a net-like sheet on the surface side of the bag.

(Function and effect)
The mulching sheet is configured to be attached to the bag body so as to cover the net-like sheet on the surface side of the bag body, so that excavation work on the ground when planting seedlings is unnecessary, The land should be poured into a net-like sheet, and there is no need to shape the land. In addition, since the bag body is a net-like sheet, surplus water can be discharged when the soil is mud-like soil containing water, and spring water from the ground and the ground surface can be used for water replenishment. It can be done easily by flow. Furthermore, since the mulching sheet having at least light shielding properties and water impermeability is integrated with the bag body into which the soil is poured, the labor of mulching construction is reduced.

<Invention of Claim 2>
According to a second aspect of the present invention, at least two of the mulching sheets are attached along one side of the outer periphery of the bag body, and in the adjacent mulching sheets, one mulching sheet has an end portion of the other mulching sheet. It disposed with a white overlap to cover a seedlings for soil dressing infusion mat of claim 1, wherein.

(Function and effect)
At least two or more mulching sheets are attached along one side of the outer periphery of the bag body. In adjacent mulching sheets, one mulching sheet is arranged with an overlap so as to cover the end of the other mulching sheet. Therefore, when planting seedlings, make a cut in the mesh sheet, and then make a cut in at least one of the adjacent mulching sheets. As a result, labor for planting seedlings and labor for mulching can be reduced.
Here, the “adjacent” relationship is established not only in the left-right direction but also in the up-down direction and the diagonal direction.

<Invention of Claim 3>
According to a third aspect of the present invention, the bag formed from the mesh-like sheet is composed of two sheets, a surface mesh sheet that forms the front surface side and a back-surface mesh sheet that forms the back surface side. Four rounds are defined by the reinforced portion knitted with the degradable material, and at least one of the weft and warp knitted in the region defined by the reinforced portion of the back mesh sheet is composed of the biodegradable material. 3. A soil-injection mat for seedlings according to claim 1 or 2.

(Function and effect)
The mesh sheet is divided by the reinforcement part knitted with a non-biodegradable material, and the circumference is divided, and in the region defined by the reinforcement part of the back mesh sheet, at least one of the weft and warp knitted is biodegraded. Because it is composed of biodegradable material, if the back mesh sheet is laid so that it faces the ground and planting seedlings, the biodegradable material threads will corrode after several months of construction, so the root growth of the seedlings Will not be disturbed.

<Invention of Claim 4>
The invention according to claim 4 is characterized in that, in the region defined by the reinforcing portion of the back surface mesh sheet, the weft knitted is composed of a biodegradable material and the warp is composed of a non-biodegradable material. 3 is a soil injection mat for seedlings according to 3.

(Function and effect)
In the area partitioned by the reinforcing part of the back mesh sheet, the weft yarn to be knitted is made of a biodegradable material and the warp yarn is made of a non-biodegradable material. Therefore, the growth of the roots of the seedlings is not hindered, and the warp yarns remain without being corroded, so that, for example, when laid on a slope, the injected soil is eroded or collapsed. It is possible to minimize the risk of being lost.

<Invention of Claim 5>
The invention according to claim 5 is the sapling mat for seedlings according to claim 3 or 4, wherein a portion from the approximate center of the surface net-like sheet to the buttock direction is made of a non-stretchable thread.

(Function and effect)
The portion of the surface net-like sheet from at least approximately the center to the buttock direction is made of a non-stretchable thread, thereby eliminating the loss of shape of the soil due to the weight of the soil when the soil is injected. be able to.

<Invention of Claim 6>
The invention according to claim 6 lays the soil injection mat for seedlings according to any one of claims 1 to 5 on the slope, injects the soil into the soil injection mat for seedlings, This is a slope planting method characterized by planting.

<Invention of Claim 7>
The invention described in claim 7 is the slope forestation method according to claim 6, wherein the soil is a mud soil that has been agglomerated.

(Function and effect)
According to the invention described in claim 6 or 7, it is possible to carry out the forestation of the slope with an efficient construction.

<Embodiments of Inventions of Claims 1 to 5>
The following aspects can also be proposed as embodiments of the inventions according to claims 1 to 5 relating to the seedling injection mat for seedlings.
As a first embodiment, the bag formed from the mesh sheet is composed of two sheets, a surface mesh sheet that forms the front surface side and a back mesh sheet that forms the back surface side. These mesh sheets are non-biodegradable. It is made of non-biodegradable material so that the outer periphery of the mesh sheet is divided into four rounds by connecting the outer peripheral reinforcing portions in the long side direction facing each other. By forming the knitted first, second and third vertical reinforcing portions, four sections for vegetation seedlings are formed, and the second vertical reinforcing portion has a surface mesh shape throughout the portion. The sheet and the back mesh sheet are sewn to form a partition, and the first and third longitudinal reinforcing portions are sewn with a rope having a diameter larger than that of the warp and weft forming the mesh, and the rope Is the surface mesh sheet with the desired spacing And at least one of a weft and a warp knitted in a region defined by the outer periphery reinforcing portion and the first, second, and third longitudinal reinforcing portions of the back mesh sheet. A soil injection mat for seedlings according to claim 1 or 2, wherein one of them is composed of a biodegradable material.

As the operational effect of the first embodiment, four areas for planting seedlings are divided by the outer peripheral reinforcing portion and the first, second and third vertical reinforcing portions, and one soil injection for seedlings is injected. Four seedlings can be planted by laying the mat, and by placing a plurality of seedling injection mats for seedlings on the ground, planting can be arranged in various designs.
Along with these reinforcing portions, the first and third longitudinal reinforcing portions are sewn with a rope having a diameter larger than that of the warp and weft forming the mesh, and the rope has a surface mesh sheet and a desired spacing. Because the backside mesh sheet is stitched together, it is possible to eliminate the deformation of the soil due to the weight of the soil injected, so the thickness of the soil when used on a slope is uneven. Can be eliminated. Therefore, planting of seedlings in the bag can be performed at an arbitrary position in the short side direction of the net-like sheet.
Furthermore, in the region defined by the outer periphery reinforcing portion and the first, second and third longitudinal reinforcing portions of the back mesh sheet, at least one of the weft yarn and the warp yarn to be knitted is made of a biodegradable material. If the back mesh sheet is laid so as to face the ground, and the seedlings are planted, the biodegradable thread will corrode after several months of construction, and will not inhibit the growth of the roots of the seedlings.

  Further, as a second embodiment, the weft yarn to be knitted is composed of a biodegradable material in the region defined by the outer periphery reinforcing portion and the first, second and third longitudinal reinforcing portions of the back surface mesh sheet. In addition, it is also possible to propose a soil injection mat for seedlings of the first embodiment in which the warp is made of a non-biodegradable material.

  The operational effect of the second embodiment is that the weft yarn to be knitted is made of a biodegradable material in the region defined by the outer periphery reinforcing portion and the first, second and third longitudinal reinforcing portions of the back surface mesh sheet. So, after several months of construction, the weft will corrode, so it will not inhibit the growth of the roots of the seedlings, and the warp will remain uncorroded, for example, when laid on a slope, It is possible to minimize the risk that the injected soil will be eroded or collapsed.

  Furthermore, as a third embodiment, in the mesh sheet, lateral reinforcement portions knitted from a non-biodegradable material so as to connect the outer peripheral reinforcement portions in the short side direction that face each other are arranged in the mesh sheet short side direction. In addition, it is also possible to propose a soil injection mat for seedlings according to the first or second embodiment, which is formed in plural at desired intervals.

  As a function and effect of the third embodiment, since a plurality of lateral reinforcing portions are formed at a desired interval in the short side direction of the mesh sheet, the prevention of the collapse of the land due to the weight of the soil that is injected is further strengthened. It is possible to further eliminate unevenness of the thickness of the soil when used on a slope.

  According to the present invention, there are advantages that the ground can be made into a forest with good construction efficiency.

Embodiments of the present invention will be described below.
<Overall configuration of seedling injection mat for seedlings>
The overall structure of the seedling injection soil mat will be described mainly with reference to FIGS. FIG. 1 is a plan view of a seedling injection mat for seedlings according to the present invention, FIG. 2 is a cross-sectional view taken along line AA for explaining the overlapping of adjacent mulching sheets, and FIG. 3 is a net-like sheet. FIG. 4 is a plan view of a bag body, and FIG. 4 is a partially enlarged view of a mesh sheet.
The soil injection mat for seedlings according to the present invention includes at least a mulching sheet 1 , 1 , ... Having light shielding properties and water impermeability, and a bag body 2 formed from a net-like sheet 3. , 1 , ... Are configured to be attached to the bag body 2 so as to cover the surface mesh sheet 31 that forms the surface side of the bag body 2. In the embodiment shown in FIG. 1, five mulching sheets 1 , 1 , ... Are attached by sewing or the like along one side (3A shown in FIG. 3) in the long side direction of the outer periphery of the bag body 2. In the adjacent mulching sheets 1 , 1, as shown in FIG. 2, the side edges of one mulching sheet 1 are arranged with an overlap K so as to cover the side edges of the other mulching sheet 1.

  The mulching sheets 1, 1,... Have at least light-shielding properties and water impermeability, and the light-shielding property prevents germination of weeds that hinder the growth of seedlings, and also prevents water from evaporating due to the water impermeability. (Preventing drying) can prevent seedlings from withering. As a material of the mulching sheets 1, 1,..., A polyethylene cloth laminate sheet or the like can be considered. Since the mulching sheets 1, 1,... Are integrated with the bag body 2, when the soil is poured into the bag body 2 in the reforestation work, the mulching sheets 1, 1,. After the sheet 2 is exposed and the soil is injected and the seedlings are planted, the seedlings are covered with the mulching sheets 1, 1,... This will reduce the effort for planting seedlings and mulching work. Further, since the mulching sheets 1, 1,... Are overlapped with each other, as shown in FIG. 5, a notch 12 is cut from the side edge to the portion at the overlap K as shown in FIG. , Planting with the sapling N sandwiched between the cuts 12, and covering the sapling N with the mulching sheets 1 and 1 up to the base of the sapling N Can be prevented. The length of the overlap K may be about 10 cm to 15 cm in a state where the bag 2 has been filled with the guest soil. In the embodiment shown in FIGS. 1 and 5, since four seedlings N are planted, there are five mulching sheets 1, 1,..., But the present invention is limited to this number. Instead, if one seedling N is to be planted, it is sufficient that an overlap is formed, so that the number of mulching sheets may be attached to at least two bags. If a plurality of seedlings N are transplanted in one bag, the number of mulching sheets may be increased accordingly.

  As the length of the long side and the short side of the mulching sheet 1, 1,..., The length in the short side direction of the mulching sheet 1, 1,. The length is about 10 cm. This is because, as shown in FIG. 7, the surface mesh sheet 31 is covered even in the state in which the soil is filled in the bag body 2, and the ease of the mulching process is taken into consideration. Therefore, as will be described later, during the mulching process, an extra portion (the length of the bag body 2 is determined from the length in the short side direction of the mulching sheets 1, 1,. As shown in FIG. 5 and FIG. 7, the portion excluding the short side length may be wound up and bound and fixed by the insulation lock 4 or the like. Further, the length in the direction in which the overlap K is formed, that is, the length in the long side direction of the bag body 2 shown in FIG. 1 may be about the same as the length of the bag body 2, It is desirable that the length of the bag 2 is slightly longer so as to cover the surface mesh sheet 31 even in the state where the customer soil is filled.

  Next, the mesh sheet 3 forming the bag body 2 will be described. The bag body 2 is composed of two sheets, a surface mesh sheet 31 that forms the front surface side and a back mesh sheet 32 that forms the back surface side. Here, although it means the front surface and the back surface, the surface in contact with the mulching sheets 1, 1,... Is referred to as the front surface side, and the surface placed in contact with the ground when the bag body 2 is laid on the ground. Is conveniently named the back side. Since the bag body 2 is formed of the mesh sheet 3, the surplus water can be discharged when the soil is muddy soil containing moisture, especially when the soil is laid on a slope. Hydration can be easily performed by spring water from the ground or ground surface flow. Note that the mesh interval (interval formed by the warp 33 and the weft 34) is preferably about 1 to 10 mm, more preferably about 1 to 5 mm, and still more preferably about 2 to 5 mm.

  As shown in FIG. 3, the reticulated sheet 3 of the front reticulated sheet 31 and the back reticulated sheet 32 is divided into four peripheries by outer peripheral reinforcing portions 3A, 3A,. The first, second and third longitudinal reinforcing portions 3B knitted with a non-biodegradable material so as to connect the outer peripheral reinforcing portions 3A, 3A in the long side direction facing each other when viewed from the end. By forming 3C and 3D, four sections for planting the seedling N are formed. Among these, the second vertical reinforcing portion 3C is formed by stitching the front surface reticulated sheet 31 and the back surface reticulated sheet 32 over the entire portion to form a partition, as shown in FIG. There is no inflow or movement of customer land at the section 3C. The first and third longitudinal reinforcing portions 3B and 3D are sewn with a rope 35 having a diameter larger than the warps 33, 33,... And the wefts 34, 34,. The rope 35 stitches the front surface mesh sheet 31 and the back surface mesh sheet 32 at a predetermined interval. One rope 35 is provided for each of the first and third vertical reinforcing portions 3B and 3D, and a uniform stress is applied to the soil, making it easy to uniformly manage the thickness of the soil. It has become. That is, when the first and third vertical reinforcing portions 3B and 3D are laid on the slope, the soil is deformed due to the weight of the soil injected (see FIG. 10). As shown in FIG. 7, it is possible to eliminate unevenness of the thickness of the soil, so that the seedlings are planted in the bag body 2 in the short side direction of the mesh sheet 3. It can be performed at any position except for both end portions.

  Further, in the present embodiment, as shown in FIG. 3, in the mesh sheet 3, lateral reinforcement knitted with a non-biodegradable material so as to connect the outer peripheral reinforcing portions 3A and 3A in the short side direction facing each other. A plurality of portions 3E, 3E,... Are formed at a desired interval in the short side direction of the mesh sheet 2. Therefore, in cooperation with the first and third vertical reinforcing portions 3B, 3D, it is possible to further strengthen the prevention of shape loss of the soil due to the weight of the soil injected, and the thickness of the soil when used for a slope. The non-uniformity can be further eliminated. Moreover, if the part which 1st and 3rd vertical reinforcement part 3B, 3D and horizontal reinforcement part 3E, 3E, ... cross | intersect is made into the stitching | suture location of the surface mesh sheet 31 and the back surface mesh sheet 32 of the rope 35, As shown in FIG. 4, the rope 35 and the lateral reinforcing portions 3E, 3E,... Have a substantially lattice shape centering on the stitched portion, so that stress can be applied to the soil more evenly.

  Note that, in the portion where the rope 35 does not sew the front mesh sheet 31 and the back mesh sheet 32, unlike the partition of the second vertical reinforcing portion 3C, as shown in FIG. Can be done. That is, the first vegetation section 21 (a section for planting seedlings partitioned by the outer peripheral reinforcing part 3A in the short side direction, the outer peripheral reinforcing parts 3A, 3A in the long side direction, and the first vertical reinforcing part 3B), and the second In the vegetation section 22 (the section for planting seedlings partitioned by the first vertical reinforcing portion 3B, the outer peripheral reinforcing portions 3A and 3A and the second vertical reinforcing portion 3C in the long side direction) Similarly, the third vegetation area 23 (the second vertical reinforcing portion 3C, the outer peripheral reinforcing portions 3A and 3A in the long side direction, and the third vertical reinforcing portion 3D is planted. And a fourth vegetation area 24 (a section for planting seedlings partitioned by the third longitudinal reinforcing portion 3D, the outer peripheral reinforcing portions 3A and 3A in the long side direction, and the outer peripheral reinforcing portion 3A in the short side direction). But inflow and movement of customer land in each section It can be, but the second vegetation compartment 22 adjacent the second longitudinal reinforcing portion 3C as a boundary the inflow and the movement of soil dressing between the third vegetation compartment 23.

  In addition, when the bag body 2 is installed on the slope, if the portion from the approximate center of the surface mesh sheet 31 to the buttock direction is made of a non-stretchable yarn, the type of the soil due to the weight of the soil that is injected Collapse (see FIG. 10) can be further eliminated. At this time, the portion from the approximate center of the surface net-like sheet 31 to the shoulder side may be composed of a stretchable thread or a non-stretchable thread.

  As shown in FIG. 3, the size of the reticulated sheet 3 is 1700 mm or more (the inner length of the outer peripheral reinforcing portions 3A and 3A in the short side direction) is 1700 mm or more (the length of the bag body is 1800 mm or more). ) The finished dimension H in the short side direction (inside dimension of the outer peripheral reinforcing portions 3A and 3A in the long side direction) is preferably 600 mm or more (700 mm or more as the bag width dimension). If it is this size, 40 liters or more of soil can be poured into the first vegetation section 21 and the second vegetation section 22 together. Similarly, more than 40 liters of soil can be injected into the third vegetation area 23 and the fourth vegetation area 24 as well. Therefore, since the thickness of the soil can be ensured by 20 cm or more as a whole except for both ends, it becomes easy to secure moisture and the like, and it can be sufficient as a seedling growing environment.

  Through holes 3F, 3F,... Are formed in the outer periphery reinforcing portions 3A, 3A,... , And the bag body 2 can be bound together with an insulation lock 4 or the like. As shown in FIG. 5, when laying the soil injection mat for seedlings on the slope, it is fixed to the natural ground with L-shaped anchor pins 5 etc. in the through-holes 3F, 3F,. In the through holes 3F, 3F,. At the same time, in the through holes 3F, 3F,... In the vicinity of the overlap K of the mulching sheets 1, 1,..., The mulching sheets 1, 1,. 2 is bound with an insulation lock 4 or the like. With the insulation lock 4 or the like, the adjacent mulching sheets 1, 1 can be bound at the overlap K, and at the same time, the bag body 2 and the mulching sheets 1, 1,.

  In the embodiment, although four sections are formed as sections for planting seedlings, the present invention is not limited to four sections (that is, four seedlings are planted). It may be one section or may be composed of two or more sections. That is, if n seedlings are transplanted, n sections may be formed, and in that case, the above-described mulching sheet may be attached to an n + 1 bag body.

  In the above embodiment, the mulching sheets 1, 1,... Are attached along one side in the long side direction of the outer peripheral reinforcing portion 3A of the bag body 2 by sewing or the like, but the present invention is not limited to this. Absent. Although not shown, in order to allow rainwater flowing down from above to enter the inside from the side end of the adjacent mulching sheet 1, the short side direction of the outer peripheral reinforcing portion 3 </ b> A of the bag body 2 is formed so that an overlap K is formed in the vertical direction. .. May be attached to one side. At this time, although not shown, if the outer periphery reinforcing portion 3A of the bag body 2 located on the buttock side and the lower side end portion of the mulching sheet 1 located on the buttock side are attached by stitching or the like, the bag enters the inside. The rainwater that has been discharged can remain in the bag body 2 without flowing downward as it is, and water retention can be improved.

<Material structure of mesh sheet>
The material composition of the mesh sheet according to the present invention will be described mainly based on FIGS. 3 and 4.
As described above, the outer periphery reinforcing portions 3A, 3A,..., The first, second and third longitudinal reinforcing portions 3B, 3C, 3D, and the lateral reinforcing portion 3E of the mesh sheet 3 of the front surface mesh sheet 31 and the back surface mesh sheet 32. , 3E,... And the rope 35 are made of a non-biodegradable material. Here, the non-biodegradable material includes, for example, polyester, polyethylene, nylon, vinylon, acrylic, polypropylene, glass, carbon, ceramic and the like. Accordingly, the portions corresponding to the skeleton of the bag body 2 are less likely to corrode over time, so that erosion and collapse of the soil can be prevented for a long time.

  For the back mesh sheet 32, at least any of the weft 34 and the warp 33 to be knitted in the region defined by the outer peripheral reinforcing portions 3A, 3A,... And the first, second and third vertical reinforcing portions 3B, 3C, 3D. One of them is made of biodegradable material. Here, the biodegradable material includes, for example, natural fibers such as cotton, hemp, silk, and cocoon, rayon, acetate, and cupra. As a result, at least one of them will corrode after several months of construction, and the growth of the roots of the seedling N will not be hindered.

  In addition, the weft yarn 34 to be knitted is composed of a biodegradable material in the region defined by the outer peripheral reinforcing portions 3A, 3A,... And the first, second and third vertical reinforcing portions 3B, 3C, 3D, If the warp 33 is made of a non-biodegradable material, the warp 33 is less likely to corrode over time, so that the outer periphery reinforcing portions 3A, 3A, 3A, 3A, 3B of the mesh sheet 3 of the surface mesh sheet 31 and the back mesh sheet 32 ... in cooperation with the first, second and third longitudinal reinforcing portions 3B, 3C, 3D, the lateral reinforcing portions 3E, 3E, ... and the rope 35, the erosion and collapse of the soil is further prolonged. Can be prevented.

  For the surface mesh sheet 31, both the weft 34 and the warp 33 to be knitted are made of a non-biodegradable material. However, at least one of them may be composed of a biodegradable material.

<Sloped forestation method using a soil injection mat for seedlings>
The slope tree planting method using the soil injection mat for seedlings will be described mainly with reference to FIGS. 5 is a plan view showing a state in which seedlings are planted on the seedling infusion mat for seedlings, FIG. 6 is a BB cross section thereof, FIG. 7 is a CC cross section thereof, and FIG. 8 is a bag. It is explanatory drawing for demonstrating injection | pouring of the customer soil to a body, FIG. 9 is explanatory drawing for demonstrating the notch | incision for planting a seedling into a bag body.

  First, before describing the slope forestation method, a soil injection device (not shown) for injecting soil S into the bag 2 will be described. This soil injection device includes a pump (not shown) for pumping the soil, a pumping hose (not shown) for transporting the soil to a bag laid on the slope, and a pumping hose. And an injection nozzle 6 connected to the tip. As will be described later, in order to agglomerate the guest soil, it is necessary to mix the water retentive granule forming agent into the soil. In this case, a pump for pumping the water retentive granule forming agent (see FIG. And a supply hose (not shown) for conveying the water retentive granule forming agent, and the tip of the supply hose is connected to the middle part (more specifically, By connecting to the Y-tube attached to the supply hose at a position 0.3 m to 10 m, preferably 0.3 m to 5 m away from the tip of the injection nozzle 6, the distance from this intermediate portion to the injection nozzle 6 Then, the soil and the water retention aggregate forming agent are mixed together, and the aggregated soil S is discharged from the tip of the injection nozzle 6. In addition, as soil used, locally generated soil, black soil, or the like can be used.

As a method of slope forestation using the soil injection mat for the seedlings, first, before the laying of the soil injection mat for the seedlings on the slope, cleaning and weeding of the ground on the slope to be laid are performed in advance. Keep it. Then, laying seedlings for soil dressing injected mat slope, as shown in FIG. 5, the through-hole 3F, 3F, ... to insert the L-shaped anchor pin 5, etc., the slopes of the seedlings for soil dressing injection Mat Fix it.

Next, as shown in FIG. 8 , a cut is made in a part of the surface mesh sheet 31 of the bag body 2, and the soil injection port 13 for inserting the spray nozzle 6 for injecting the soil S is formed. . In addition, about this soil injection port 13, if it demonstrates in the case of injection | pouring of the soil S to the 1st vegetation section 21 and the 2nd vegetation section 22, it will be in the 1st vegetation section 21 and the 2nd vegetation section 22 In order to sufficiently fill S, it is preferable to form on the shoulder side as shown in FIG. 8 because the soil S is easier to fill. The position may be arbitrary. The same operation is performed for the third vegetation area 23 and the fourth vegetation area 24.

  As the soil S to be injected, there are air permeability and water retention from the viewpoint of the growth of the plant, and the above-mentioned aggregate is made for reasons such as high drainage of excess water from the viewpoint of workability. It is preferably soil, and more preferably aggregated mud soil (custom soil).

Next, after filling the soil S, in order to plant seedlings in the bag 2 , as shown in FIG. 9 , a notch 11 is made at a desired position, and the notch 11 enters the soil S. Just plant a seedling. The incision direction of the incision 11 may not be the longitudinal direction as shown in FIG. However, it is not preferable to cut in the vertical direction and the horizontal direction.

  After that, as shown in FIG. 5, the mulching sheet 1 to be stacked is cut from the side edge to the portion at the point of overlap K, planted while sandwiching the seedling N in the notch 12, and planted. Cover to the vicinity of the root with mulching sheets 1 and 1. Then, the excess part of the mulching sheet 1, 1 is wound up, a hole (not shown) is formed in a part of the overlap K, and the hole is connected to the through holes 3F, 3F,. 2 and the mulching sheets 1, 1 may be integrated, and the mulching sheets 1, 1 may cover the surface mesh sheet 31 of the bag body 2.

It is a top view of the customer soil injection mat for seedlings concerning the present invention. It is AA sectional drawing for demonstrating the overlap of an adjacent mulching sheet. It is a top view of the bag body which consists of a net-like sheet. It is the elements on larger scale of a net-like sheet. It is a top view which shows the state which planted the seedling into the customer soil injection mat for seedlings. It is the BB cross section. It is the CC cross section. It is explanatory drawing for demonstrating injection | pouring of the customer land to a bag. It is explanatory drawing for demonstrating the cutting for planting a seedling into a bag. It is sectional drawing of the comparative example of the customer soil injection mat for seedlings laid in the slope.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Mulching sheet, 2 ... Bag body, 3 ... Reticulated sheet, 3A ... Outer periphery reinforcement part, 3B ... 1st vertical reinforcement part, 3C ... 2nd vertical reinforcement part, 3D ... 3rd vertical reinforcement part, 3E ... Lateral reinforcing part, 3F ... through hole, 4 ... insulok, 5 ... L-shaped anchor pin, 6 ... injection nozzle, 11 ... incision (reticulated sheet side), 12 ... incision (mulching sheet side), 13 ... inside soil injection port, 21 ... First vegetation section, 22 ... Second vegetation section, 23 ... Third vegetation section, 24 ... Fourth vegetation section, 31 ... Front mesh sheet, 32 ... Back mesh sheet, 33 ... Warp, 34 ... Weft, 35 ... Rope, K ... Overlapping, N ... Sapling, S ... Guest soil.

Claims (7)

A sapling mat for seedlings provided with a mulching sheet having at least light shielding properties and water impermeability, and a bag formed from a net-like sheet,
The mulching sheet was attached to the bag so as to cover the net-like sheet on the surface side of the bag.
This is a soil injection mat for seedlings. At least two sheets of the mulching sheet are attached along one side of the outer periphery of the bag body,
The adjacent soil mulching sheet according to claim 1, wherein one mulching sheet is disposed with an overlap so as to cover an end of the other mulching sheet. The bag formed from the mesh sheet is composed of two sheets, a surface mesh sheet that forms the front surface side and a back mesh sheet that forms the back surface side,
These mesh sheets are divided by the reinforcement part knitted with a non-biodegradable material, and at least one of the weft and warp knitted in the region defined by the reinforcement part of the back mesh sheet is produced. The soil injection mat for seedlings according to claim 1 or 2, comprising a degradable material.   4. The seed soil infusion for seedlings according to claim 3, wherein the weft yarn to be knitted is made of a biodegradable material and the warp yarn is made of a non-biodegradable material in the region defined by the reinforcing portion of the back mesh sheet. mat.   5. The seed soil pouring mat for seedlings according to claim 3, wherein at least a portion of the surface net-like sheet from the substantially center to the direction of the hip is made of a non-stretchable yarn. Laying the soil injection mat for seedlings according to any one of claims 1 to 5 on a slope, injecting soil into the soil injection mat for seedlings, and planting seedlings,
The slope forestation method characterized by this.   The slope forestation method according to claim 6, wherein the soil is a mud soil that has been aggregated.

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