JPH0787852A - Planting of tree in planting hole - Google Patents

Abstract

PURPOSE:To improve the drainage of soil refilled in a planting hole and prevent the root-rot of a garden tree by placing a water-permeable porous material on the bottom of a planting hole and burying the root of a tree above the porous material. CONSTITUTION:A water-permeable cylinder 4 is inserted into the lower part of a planting hole 3 opened on a ground 1 and the root 21 of a garden tree 2 is placed above the cylinder and buried with soil. The cylinder is made of a porous material having a number of pores nearly uniformly distributed in the material and is produced e.g. by kneading sand having uniform particle size with a thermosetting adhesive, tightening the mixture in a mold and curing and aging the formed product. The excess water in the planting hole is drained through the numerous holes of the cylinder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of digging a hole in the ground such as a garden, a park or a street and planting seedlings of trees into the hole.

[0002]

2. Description of the Related Art A general method for planting conventional plant trees is as follows. That is, first, according to the size of the part where the roots of the plant are spread, the upper surface is circular and its diameter is about twice the approximate circle of the part where the roots are spread, and the depth is the tip of the root of the plant. Dig a planting hole 20 cm deeper than the position where Next, insert soil into the planting hole up to the tip of the root, place the root of the planting tree in the center of the planting hole, and fill the soil in the planting hole to create a gap between the planting plant and the planting hole. Close up.

[0003]

However, according to the above-mentioned conventional method, since the side wall portion, which is the ground around the planting hole, is easily collapsed, even if the soil is backfilled densely in the planting hole, a gap is left in the side wall portion. There are many things you can do. If rainwater, etc. enters this gap, especially if there is no sand layer or other part of the soil around the planting hole that facilitates drainage, the rainwater that enters will not be discharged from the soil in the planting hole. However, there is a problem that root rot occurs without supplying sufficient air.

The present invention has been made by paying attention to such problems of the prior art, and in a method of planting a plant tree in a planting hole formed in the ground, drainage of soil backfilled in the planting hole is performed. It is an object of the present invention to provide a method capable of preventing root rot of a plant planted in the planting hole.

[0005]

In order to achieve the above object, the present invention is to arrange a water-permeable porous material in the lower part of a planting hole formed in the ground, and to fill the root of the plant tree above it. A method of planting trees in a characteristic planting hole is provided.

[0006]

According to the method of the present invention, since the water-permeable porous material is arranged in the lower part of the planting hole, when a large amount of rainwater enters the soil filled in the planting hole, the porosity of the porous material is increased. Excess water in the planting hole is drained from the hole in the quality material. Thereby, the drainage of the soil in the planting hole is improved, so that even if the soil around the planting hole does not have a part such as a sand layer that facilitates drainage, the root rot of the planted plant planted in the planting hole can be prevented.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view for explaining one embodiment of the method of the present invention, and FIG. 2 is a perspective view showing the porous material used in this embodiment. As shown in FIG. 1, first, at a predetermined position of the ground 1, a cylindrical planting hole 3 having a diameter of the upper surface slightly larger than that of the bottom surface is formed in accordance with the size of the expanded portion of the root 21 of the plant 2.
2, and a cylindrical body 4 having an outer peripheral surface formed into a shape corresponding to the inner peripheral surface of the planting hole 3 as shown in FIG.
Inset.

That is, the cylindrical body 4 is replaced with the set planting hole 3
It is made in advance in a shape that matches the size of
For example, the planting hole 3 is dug in such a shape that the upper end surface is located 20 to 30 cm below the ground.
This cylindrical body 4 is made by, for example, kneading sand having a uniform particle size such as commercially available standard sand (diameter of 2 mm or less) and a thermosetting adhesive such as an epoxy resin in a container to uniformly mix them. It is manufactured by curing and curing the above material in a compacted state in a mold. Here, the particle size is approximately 0.3 m
It was prepared by kneading sands having a size of about m and an epoxy adhesive in an amount of about 8% by weight with respect to the sand. The fine structure of this cylinder is shown in FIG. 3. As can be seen from this figure, since a large number of relatively large voids 42 are uniformly formed between the sand particles 41, this cylinder 4 has a high water permeability. Is equipped with.

Next, after the soil is put into the lower portion 4a in the cylindrical body 4 installed in the planting hole 3 to about 1/3 of the total depth, the root of the plant 2 is placed in the upper center of the planting hole 3. The portion 21 is placed, and the soil between the planting hole 3 (including the inside of the cylindrical body 4) is backfilled to close the gap between the plant 2 and the planting hole 3. Therefore,
When a large amount of rainwater or the like enters the soil filled in the planting hole 3, the excess water in the planting hole 3 is discharged from the large number of holes 42 of the tubular body 4. As a result, the soil in the planting hole 3 is well drained, and thus root rot of the plant 2 planted in the planting hole 3 is prevented even if the soil around the planting hole 3 does not have a portion such as a sand layer that is easily drained. be able to.

In this example, the cylindrical body 4 is used as the porous material.
Since the outer peripheral surface of the tubular body 4 is in contact with most of the peripheral surface of the planting hole 3, the side wall portion 11 which is the ground around the planting hole 3 is less likely to collapse. This makes planting holes 3
It becomes difficult to form a gap in the side wall portion 11 of the above, and it is possible to prevent a large amount of rainwater from entering the planting hole 3. Further, in the lower part of the planting hole 3, the entire peripheral surface of the planting hole 3 is protected by the cylindrical body 4, so that the fertilizer put in the bottom of the planting hole 3 is prevented from flowing out from the planting hole 3.

The side wall portion 11 depends on the condition of the ground 1, etc.
If it is expected that the plant will not collapse easily, as shown in FIG. 4, a plurality of plate members 5 made of a porous body made of the same material as the cylindrical body 4 are planted in the lower part of the planting hole 3. You may install at intervals along the peripheral surface of the hole 3. In this case, the plate material 5 is inserted into the ground below the planting hole 3 and then soil is put in the lower part of the planting hole 3.

[0012]

As described above, according to the method of the present invention, by disposing the water-permeable porous material under the planting hole formed in the ground, the soil in the planting hole is well drained. Therefore, even if the soil around the planting hole does not have a part such as a sand layer that easily drains water, the root rot of the plant planted in the planting hole can be prevented. As a result, important trees planted in gardens, parks, streets, etc. can be protected without dying.

[Brief description of drawings]

FIG. 1 is a cross-sectional view for explaining one embodiment of the method of the present invention.

FIG. 2 is a perspective view showing a porous material used in this example.

FIG. 3 is an enlarged view showing a microstructure of a porous material used in this example.

FIG. 4 is a perspective view for explaining another embodiment of the method of the present invention.

[Explanation of symbols]

 1 Ground 2 Plant 21 Root 3 Planting hole 4 Cylindrical body (porous material) 5 Plate material (porous material)

Claims (1)

[Claims] 1. A method of planting trees in a planting hole, which comprises arranging a water-permeable porous material in the lower part of the planting hole formed in the ground and burying the roots of the planting tree above the porous material.