JP3172087B2 - Graft holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graft holder for crimping and fixing a joint portion of a rootstock and a scion in order to activate the rootstock and a scion, and more particularly to a graft holder formed of a biodegradable resin. is there.

[0002]

2. Description of the Related Art Fruit vegetables such as eggplant, tomato, cucumber, watermelon, melon, etc. are grown by grafting their seedlings (spikelets) to other rootstocks. This graft is cut off diagonally at the top of the rootstock, and the bottom of the scion is also cut at an angle similar to the angle at which the rootstock was cut. The bottom end of the scion is joined to make the rootstock and scion alive. Since the rootstock and the scion take a long period of time, in order to maintain the joint between the rootstock and the scion, as described in Japanese Utility Model Application Laid-Open No. 4-113,47, it is formed into a clothespin or cylindrical shape. The joint is crimped by the grafted holder. These graft holders are made of plastic.

[0003]

However, since the plastic does not usually decompose by corrosion, after the grafting (after the joining portion is activated), the unnecessary grafting holders are removed from the grafting one by one, or There is a problem that it is necessary to pick up the objects that have fallen from the graft one by one. Since the number of grafts is very large, collecting the graft holders has been a very laborious task.

The present invention has been made to solve the above-mentioned problems, and has as its object to provide a graft graft holder that does not require collection after grafting.

[0005]

In order to achieve this object, a graft graft holder according to claim 1 is provided with a tubular support body whose upper and lower sides are opened and the support body provided in a vertical direction of the support body. And a pair of side walls vertically provided at predetermined intervals on an outer peripheral wall of the support, and the pair of side walls are pinched in a direction approaching each other to form the crack. And the inner diameter of the support is increased, and a stock or scion is inserted into the support, and a V is provided between the pair of side walls of the support.
An elastic wall having elasticity formed in a letter shape or a W shape is provided, and the support, the side wall, and the elastic wall are integrally formed of a biodegradable resin.

In the graft holder according to the first aspect, when the pair of side walls are pinched in a direction approaching each other, the opening of the crack provided in the support is widened, and the inner diameter of the support is increased. In this state, the upper end of the rootstock, whose upper part has been cut off and removed, is inserted into the support, and the pinched side wall is released.
Then, the support returns to the original shape by the elastic action of the elastic wall, so that the opening of the crack is reduced, and the inner diameter of the support is reduced, so that the upper end of the rootstock is located substantially in the lower half of the support. Will be accommodated. Next, the lower end of the scion, which has been cut off at the lower part, is inserted into the support, and joined to the upper end of the stock. The joint is fixed by pressure by the support, and after a predetermined period of time, the scion and the stock stand. After the rooting, the grafted holder that has fallen naturally is decomposed into harmless substances in the soil because it is formed of a biodegradable resin.

[0007] Grafting holder according to claim 2, wherein, in the grafting holder according to claim 1, wherein the protruding length from the support of each side wall is constituted by more than approximately half of said support body length, said support The inner diameter of the upper end is formed larger than the inner diameter of the substantially central portion.

[0008]

[0009]

[0010]

[0011] The grafting holder according to the third aspect is characterized in that :
In the graft holder according to 1 or 2, the biodegradable resin is composed of a copolymer of caprolactone and lactide.

[0012]

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows the first
1 illustrates a graft holder according to an embodiment. FIG. 1A is a top view of the graft holder, and FIG.
It is sectional drawing in the II line in (a).

As shown in FIGS. 1 (a) and 1 (b), the grafting holder 1 comprises a support 2 for accommodating a scion 6 and a stock 5.
And a pair of side walls 3 extending from the support 2, and an elastic wall 4 provided between the pair of side walls 3. The support 2 is formed in a cylindrical shape, and the inner diameter is gradually increased from the lower N to the upper M, and the inner diameter L at the upper end is particularly increased. That is, the support 2
The inner shape of the upper end 2b is formed in a trumpet shape that opens upward. Therefore, after the rootstock 5 is inserted into the graft holder 1, the scion 6 can be easily inserted from above.

On one side of the support 2, a crack 2 reaching the inner circumference
The elastic wall 4 is formed on the support 2 at a position facing the split 2a. The elastic wall 4 is for giving elasticity to the support 2 and is formed in a W shape in a top view. On both sides of the elastic wall 4, a pair of side walls 3 extending radially from the support 2 are provided. Side wall 3
Are formed in a flat plate shape, and are disposed in the vertical direction of the support 2 from the upper end to the lower end thereof. In order to reduce the weight of the side wall 3, the protruding length K of the side wall 3 from the support 2 is set to be almost half the height (length) of the support 2. Graft holder 1 attached to graft
However, this is to prevent the side wall 3 from dropping off from the grafted tree due to its own weight before its survival.

The support 2, the side wall 3, and the elastic wall 4 are integrally formed of a biodegradable resin (biodegradable plastic) of a copolymer of caprolactone and lactide. A biodegradable resin is a resin that, when disposed of in soil or in the sea or river, is decomposed into harmless substances in a relatively short period of time by microorganisms present therein. The biodegradable resin used for the grafting holder is soft (soft) that does not hinder the growth of the graft, rubber-like elasticity that can be applied to grafts of various thicknesses, and the joints are removed during grafting work. And those having transparency that can be confirmed from the above. In addition, since it takes about one week for the joining part to live, it is necessary that the material be not softened or collapsed for one week under an environment of a temperature of 30 ° C. and a humidity of 95%. Therefore, in the graft holder 1 of the first embodiment, a copolymer of caprolactone and lactide was employed as a biodegradable resin satisfying the above conditions. In particular, a copolymer composed of 57-74% of caprolactone and 43-26% of lactide is suitable for the graft holder.

Here, the dimensions of the graft holder 1 in the first embodiment are shown below as an example. The height (length) of the support 2 is approximately 15 mm, and the outer diameter of the upper end of the support 2 is approximately 6 m
m, the outer diameter of the lower end is approximately 4.2 mm, and the inner diameter L of the upper end is approximately 3.
5 mm, upper inner diameter M is approximately 2.3 mm, lower end inner diameter N is 2.0 mm, extension length K of side wall 3 is approximately 7 mm, height (length) of side wall 3 is approximately 15 mm, thickness of side wall 3 Is about 1.5m
m, and the thickness of the elastic wall 4 is approximately 0.8 mm.

Next, a method of using the graft holder 1 configured as described above will be described. Graft holder 1
When the side wall 3 is pinched toward the elastic wall 4, that is, in the direction of arrow A in FIG. 1A, the opening of the crack 2 a facing the elastic wall 4 is widened, and the inner diameter of the support 2 is greatly widened. The upper end of the stock 5 that has been cut off obliquely from its upper part is inserted into the grafted holder 1 from the prepared pilot hole 2c of the support 2. It should be noted that the stock 5 may be inserted from the widened crack 2a. After inserting the stock 5, the picked side wall 3 is released, and the elasticity of the biodegradable resin of the copolymer of caprolactone and lactide and the elasticity of the elastic wall 4 provided between the side walls 3 cause the support 2 Returns to its original shape. Thereby, the upper end of the stock 5 accommodated in the support 2 is held by the support 2. FIG. 2 illustrates this state. The graft holder 1 shown in FIG.
Is a cross-sectional view taken along line II in FIG. 1A, as in FIG. 1B.

After the upper end of the stock 5 has been clamped by the support 2, the cuttings 6 from which the lower part has been cut obliquely and removed are grafted from the upper hole 2b of the support 2 in the direction of arrow C in FIG. Holder 1
Insert into. The upper hole 2b of the support 2 is open like a trumpet, and the inner diameter of the support 2 is gradually increased from the lower end toward the upper end, so that the insertion of the scion 6 can be easily performed. Can be. When the thickness of the inserted scion 6 is larger than the inner diameter of the support 2, the split 2
a spreads, and the insertion of the scion 6 is assisted. Since the grafting holder 1 is formed of a transparent biodegradable resin of a copolymer of caprolactone and lactide,
The grafting operation can be performed while confirming that the cut surface 6a of the base material 5 is joined to the cut surface 5a of the stock 5.

The scion 6 inserted in the graft holder 1
Is pressed and fixed by the support 2 in a state where the cut surface 6a is joined to the cut surface 5a of the stock 5, and in this state, about 1
After a lapse of a week, the scion 6 and the stock 5 are activated.
In addition, even if the stock 5 and the scion 6 are shaken by wind and vibration before being taken, the joint is sandwiched by the support 2 elasticized by the elastic wall 4.
Engraftment is not hindered. Further, since the grafting holder 1 is formed of a soft biodegradable resin having a rubbery elasticity of a copolymer of caprolactone and lactide, it does not hinder the growth of the graft after the rooting. .

When the cut surfaces 5a and 6a of the stock 5 and the scion 6 are activated and the graft grows and becomes thick, the graft holder 1
The opening of the crack 2a is widened, and the grafting holder 1 comes off the grafting and falls naturally onto the soil 7 soon. The dropped graft holder 1 is decomposed by microorganisms in soil and decomposed into carbon dioxide and water.

As described above, according to the grafting holder 1 of the first embodiment, since the entire grafting holder 1 is formed of a biodegradable resin of a copolymer of caprolactone and lactide, unnecessary after grafting. The grafted holder 1 is decomposed into harmless carbon dioxide and water in the soil.
Therefore, it is not necessary to collect the used graft holder 1 after use. Moreover, although the biodegradable resin of the copolymer of caprolactone and lactide is superior in elasticity to other biodegradable resins, the elasticity of the support 2 alone may be insufficient. In such a case, the lack of elasticity of the support 2 can be compensated for by the elastic wall 4 arranged opposite to the cut 2a of the support 2. Furthermore, according to the graft holder 1 of the present embodiment, grafting can be performed with one hand.

Next, a graft holder according to a second embodiment will be described with reference to FIG. FIG. 3A is a top view of the graft holder according to the second embodiment, and FIG.
It is sectional drawing in the III-III line in (a).

As shown in FIG. 3 (a), the graft holder 11 of the second embodiment has two cylindrical tubular members 12,13.
Are configured as a joined support. The two cylindrical bodies 12 and 13 are provided with cylindrical through holes 12a and 13a penetrating in the vertical direction of the cylindrical bodies, and the inner diameters of the two through holes 12a and 13a are formed to be different. (Inner diameter 12a> inner diameter 13a). These through holes 12a, 13
A graft of a stock and a scion is inserted into one of the holes a, and a column for supporting the graft inserted into the one of the through holes is inserted into the other through hole. The through holes 12a and 13a into which the graft and the support are inserted are selected according to the thickness of the graft.

At positions facing the joint portion 14 between the two cylindrical bodies 12 and 13, there are provided cracks 12 b and 13 b provided in the vertical direction reaching the inner periphery of the cylindrical bodies 12 and 13, respectively. Due to the cracks 12b and 13b, the cylindrical body 1
Elasticity is given to 2,13. As shown in FIG. 3B, the upper ends 12c, 13c and the lower ends 12d, 13d of the tubular bodies 12, 13 are formed in a trumpet shape that opens toward the ends. Rootstocks, scions, and struts can be easily inserted into the system. The graft holder 11 of the second embodiment is also integrally formed of a biodegradable resin of a copolymer of caprolactone and lactide, similarly to the graft holder 1 of the first embodiment.

Here, the dimensions of the graft holder 11 in the second embodiment are shown below as an example. The height (length) of the grafting holder (support) is about 15 mm, the outer diameter of one cylindrical body 12 is about 3.7 mm, and the outer diameter of the other cylindrical body 13 is about 3.5 mm, and one cylinder The inner diameter Q of the body 12 is approximately 3.4 m
m, the inner diameter R of the other cylindrical body 13 is approximately 3.0 mm, and the thickness of both cylindrical bodies 12, 13 is approximately 1.0 mm.

Next, the graft holder 1 of the second embodiment will be described.
The method of using No. 1 will be described. First, from the lower end 12d of one cylindrical body 12 of the grafting holder 11, the upper end of the stock removed by cutting the upper part diagonally is inserted. As the tubular body 12 to be inserted into the rootstock, an appropriate tubular body 12 is selected according to the thickness of the rootstock and spike to be inserted. At this time, the stock is easily inserted into the tubular body 12 by the trumpet-shaped opening provided at the lower end 12d and the split 12b. Next, the scion, which is obtained by cutting the lower part obliquely, is inserted into the tubular body 12 into which the rootstock has been inserted, from its upper end 12c. The insertion of the scions is also easy due to the trumpet-shaped opening provided at the upper end 12c and the split 12b.

When the rootstock and scion are inserted into the graft holder 11, a support for supporting the graft is inserted into the empty tubular body 13 from its upper end 13c. The tip of the inserted strut is inserted into the soil, and the graft is firmly supported by the strut. The scion inserted into the graft holder 11 is crimped and fixed by the tubular body 12 in a state where the cut surface is joined to the cut surface of the stock, and after about one week, the scion and the stock are separated. Get in touch with each other.

When the cut surfaces of the rootstock and the scion are entangled and the graft grows and becomes thicker, the crack 12 of the graft holder 11
The opening of “a” is widened, and the grafted holder 11 comes off the graft and falls naturally onto the soil. The dropped graft holder 11 is decomposed by microorganisms in the soil and decomposed into carbon dioxide and water.

As described above, according to the grafting holder 11 of the second embodiment, there are provided two cylindrical bodies 12 and 13 into which the graft and the support are inserted, and the graft is inserted according to the thickness of the graft. Since you can select the tubular body to do,
Even when the grafts have various thicknesses, the graft can be properly grafted. In other words, one type of graft holder 11 can support grafts of various thicknesses.

As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the gist of the present invention. Can easily be inferred.

The grafting holders 1 and 11 of this embodiment were formed from a biodegradable raw resin of a copolymer of caprolactone and lactide. However, this grafted holder 1,11
Can be formed from a modified starch or a lactic acid-based biodegradable resin. Since the lactic acid-based biodegradable resin has high transparency, the joint between the rootstock and the scion can be seen from the outside, the grafting operation can be performed accurately, and carbon dioxide gas is passed through lactic acid during the decomposition process. Therefore, lactic acid can be used as soil nutrients.

In the first embodiment, the elastic wall 4 is formed in a W shape when viewed from above. However, the shape is not necessarily limited to this as long as the shape has elasticity. For example, it may be formed in a V-shape as viewed from above, or formed in another shape having elasticity. The support 2 of the side wall 3
The length K of the protrusion can be made shorter as long as the side wall 3 can be pinched.

Further, the support 2 of the first embodiment and the second support
The cylindrical bodies 12 and 13 of the embodiment need only be cylindrical, and need not necessarily be cylindrical. Therefore, the support 2 and the cylindrical bodies 12 and 13 may be constituted by polygonal cylindrical bodies.

[0034]

According to the grafting holder according to the first aspect, after the grafting takes place, the grafted holder that has fallen naturally is decomposed into harmless substances in the soil, so that the used grafting holder is used one by one. This has the effect of eliminating the need for a collection operation to collect the data. Further, since the support is provided with an elastic wall, the support can be formed of a biodegradable resin but can have sufficient elasticity. Therefore, the scion and the stock can be easily inserted into the support, and the scion and the stock stored in the support can be crimped and fixed. The elastic wall is V
Because it is formed in the shape of a letter or W,
With no change, the elastic is applied to the support molded with biodegradable resin.
There is an effect that the property can be given.

According to the grafting holder of the second aspect,
In addition to the effect of the grafting holder according to claim 1, furthermore, since the length of each side wall projecting from the supporter is configured to be approximately one half or less of the supporter length, after the graft is stored in the supporter, There is an effect that it is possible to prevent the grafting holder from dropping off from the grafting due to its own weight of the side wall before the rooting. Also, since the inner diameter of the upper end of the support is formed to be larger than the inner diameter of the approximate center, it is possible to easily insert the scion into the support from above the support after accommodating the stock in the support. There is an effect that can be.

[0036]

[0037]

According to the graft holder of the third aspect ,
In addition to the effect of the graft holder according to claim 1 or 2 , furthermore, since the graft holder uses a biodegradable resin composed of a copolymer of caprolactone and lactide, the graft holder is transparent and soft, Moreover, it has elasticity. Therefore, since it is transparent, the state of the joint can be seen from the outside during the grafting operation, and there is an effect that the grafting operation can be performed accurately. Moreover, since it is soft, there is an effect that growth of the grafted plant is not hindered. Further, the elasticity has an effect that the graft can be properly grafted even if the graft has various thicknesses.

[Brief description of the drawings]

FIG. 1 (a) is a top view of a graft holder according to a first embodiment of the present invention, and FIG. 1 (b) is a view showing I in FIG. 1 (a).
It is sectional drawing in the -I line.

FIG. 2 is a view showing a state where a graft holder is attached to a stock.

FIG. 3 (a) is a top view of a graft holder according to a second embodiment of the present invention, and FIG. 3 (b) is II in FIG. 3 (a).
It is sectional drawing in the I-III line.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Graft holder 2 Support 2a Split 3 Side wall 4 Elastic wall 5 Rootstock 6 Hogi 11 Graft holder (support) 12, 13 Cylindrical body 12a, 13a Through-hole (1st through-hole, 2nd through-hole) 12b, 13b Split (first split, second split)

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A01G 1/06

Claims (3)

(57) [Claims] 1. A cylindrical support having an open top and bottom, a crack provided in an up and down direction of the support and reaching the inner periphery of the support, and a predetermined interval between an outer peripheral wall of the support and a gap. A pair of side walls provided in a vertical direction, and by pinching the pair of side walls in a direction approaching each other, the opening of the crack and the inner diameter of the support are increased, and a rootstock is inserted into the support. Or in a graft holder for inserting a scion, a V-shape or a W-shape is provided between the pair of side walls of the support.
A grafting holder, comprising: an elastic wall having elasticity formed in a shape ; and wherein the support, the side wall, and the elastic wall are integrally formed of a biodegradable resin. Wherein said protruding length from the support of each side wall is constructed in the following 1 approximately half of said support body length, inner diameter of the upper end of the support is formed larger than the inner diameter of a substantially central portion thereof The grafting holder according to claim 1, wherein 3. The grafting holder according to claim 1, wherein the biodegradable resin is composed of a copolymer of caprolactone and lactide.