JPH0923758A - Raising of seedling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a process for growing seedling which enables efficient transplanting and growing of seedlings or yound trees, even in an undesirable working environment, in other words, in a working site inclined over a wide area. SOLUTION: Seedlings or young trees 4 are preliminarily grown in a soil 3 surrounded its side peripheral face with at least one sheet 21 which is biodegradable and has holes through which roots can pass through, and are transplanted, to the holes 51 which are bored on the seedling-growing may made of a fibrous biodegradable material laminated by using a biodegradable adhesive to a desired thickness, together with the surrounding sheet material 21. Then, the seedlings are further grown.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a seedling raising method.

[0002]

2. Description of the Related Art Conventionally, when a large amount of trees and flowers are raised, a synthetic resin seedling tray having a large number of pots is used. That is, in this seedling raising tray, each pot portion is filled with the soil, and the soil is planted by cutting trees or planting seeds to grow seedlings or seedlings.

When the roots have grown to some extent, the seedlings are pulled up and taken out from the pot together with the soil,
As it is, it is transplanted to the open field, a large pot, etc. to grow further. However, in the above seedling raising method,
When pulling out the seedlings or seedlings raised in the nursery tray from the pot part, the soil around the roots suitable for root growth may remain in the pot part, or in the worst case, the weight of the soil remaining in the pot part At the same time as the soil remains in the pot, some of the roots that have grown up may be cut off, causing the seedlings or seedlings to die or causing poor growth.

Therefore, the seedlings and seedlings must be carefully pulled out from the pot so that the soil is not left in the pot and the roots are not cut off. This requires a great deal of skill and poor workability.

[0005]

Therefore, in order to solve such a problem, the inventor of the present invention has found that the soil is biodegradable at least in the side peripheral surface in a large number of pots recessed in the seedling raising tray. It has already been proposed a method of filling seedlings in a state surrounded by a sheet material having, and raising seedlings in this medium.

That is, according to this seedling raising method, the pot portion is filled with the soil in a state that at least the side peripheral surface is surrounded by the sheet material having biodegradability, so that the sheet having the upper edge of the sheet material after raising the seedling is used. By pulling up the sapling together with the timber, anyone can easily and reliably take out the sapling from the pot section.

Therefore, the soil is not left in the pot,
Since the sheet material can be transplanted without damaging the roots of the seedlings and the sheet material is biodegradable, the sheet material decomposes in the soil even if the seedlings are transplanted together with the sheet material, hindering the root growth of the seedlings, It is an excellent seedling raising method that does not cause pollution. However, it is said that it takes time and effort to plant saplings and flower seedlings of trees cultivated by such a method in a wide range of places, for example, because there is a slope such as a central separator such as an expressway. There's a problem.

In view of the above situation, the present invention can be applied to a place where the work environment is poor, such as a slope in a wide range.
The purpose is to provide a seedling raising method that enables efficient planting of seedlings and seedlings.

[0009]

In order to achieve such an object, the method for raising seedlings according to the present invention has a sheet material which is biodegradable and has holes through which roots can pass, and at least the side peripheral surface is surrounded by the sheet material. The seedlings or seedlings that were pre-grown in the soil
Numerous biodegradable fibrous materials are inserted into the mats for raising seedlings, which are shaped to have a desired thickness via an adhesive having natural degradability, at appropriate intervals, and are inserted together with the sheet material to further raise seedlings. I decided to do it.

In the above construction, as the biodegradable sheet material, natural fibers such as hemp and cotton are knitted in a mesh shape, and urethane resin, polyvinyl alcohol, vinyl acetate, etc. which are decomposed by hydrolysis are impregnated and cured. The shape-retaining property is improved, or the biodegradable plastic is formed into a mesh shape. The urethane is decomposed by hydrolysis while knitting natural fibers such as hemp and cotton in a mesh shape. It is particularly preferable that the resin, polyvinyl alcohol, vinyl acetate and the like are impregnated and cured to improve the shape retention.

The fiber material constituting the seedling raising mat is not particularly limited as long as it has biodegradability, and examples thereof include palm fibers and palm fruit fibers. The naturally degradable adhesive is not limited to biodegradation, and is not particularly limited as long as it is decomposed by hydrolysis or the like and does not adversely affect the environment, and examples thereof include polyvinyl alcohol and vinyl acetate.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the method for raising seedlings according to the present invention will be described. First, as shown in FIG. 1, a natural fiber such as hemp or cotton as a biodegradable sheet material is knitted in a mesh shape. At the same time, a sheet material (indicated by a chain line in the figure) 2 impregnated and cured with a urethane resin that is decomposed by hydrolysis or the like is provided in a large number of pot portions 11 recessed in a substantially octagonal truncated pyramid shape of the seedling raising tray 1 into a substantially conical cylindrical shape Fit them in the rolled state.

As a result of this fitting, as shown in FIG. 2, the substantially conical cylindrical body 21 formed by rolling the sheet material 2 is supported by the inner wall surface of the pot portion 11 with its outer wall surface partially supported, thereby forming a substantially conical cylinder shape. And the gap 5 is always formed between the inner wall surface of the pot portion 11 and the portion other than the support portion. In addition,
Although not shown, a water drain hole is formed in the bottom of the pot portion 11.

Next, as shown in FIGS. 1 to 3, after filling the soil 3 into the substantially conical tubular body 21, the cuttings of the tree for raising seedlings are inserted into the soil 3 or seeded on the soil 3. Seedling (or seedling) 4 is preliminarily raised. Then, when the root is sufficiently attached, the pre-grown seedling 4 is taken out from the pot portion 11. At this time, since the soil 3 is surrounded from the periphery by the substantially conical tubular body 21, if the upper edge of the sheet material 2 and the sapling 4 are pulled up, the soil 3 will become the pot portion 11.
It can be taken out together with the sapling 4 without remaining inside or cutting off the root due to the weight of the soil 3.

Next, the pre-grown seedlings 4 thus taken out are set together with the sheet material 2 and the soil 3 in a predetermined position on the seedling-growing mat 5 as shown in FIG. That is, the seedling-growing mat 5 is a palm fruit fiber shaped by vinyl acetate resin as an adhesive having a natural degradability, and is approximately the same as or slightly larger than the maximum diameter of the conical tubular body 21. A large number of holes 51 larger than the minimum diameter are provided so as to penetrate the front and back surfaces. Therefore, the seedling 4 can be set at a predetermined position by inserting the seedling 4 together with the sheet material 2 and the soil 3 into the hole 51.

Then, the seedlings 4 are further raised on the seedling mat 5. Although not shown, the raising of seedlings on the seedling raising mat 5 is carried out in a dish-shaped container in which a peripheral wall is erected so as to surround the side wall surface of the raising seedling mat 5 in order to ensure water retention of the mat 5. . By this seedling raising, as shown in FIG.
The roots 41 of the seedlings 4 grow and spread through the holes of the sheet material 2 into the seedling-growing mat 5, so that the seedlings 4 are firmly rooted on the seedling-growing mat 5.

As shown in FIG. 6, the mat 5 for raising seedlings in which the above-mentioned number of seedlings 4 are firmly rooted is simply laid on a predetermined place such as a slope 71 of a bank as a median strip of a highway 7. , Many seedlings 4 can be planted at once,
The time for planting the saplings 4 can be shortened without the need to dig back the portion where the saplings 4 are planted one by one. Moreover, since the sheet material 2 and the seedling-growing mat 5 are formed of a biodegradable material, and the adhesive also has a natural degradability, they decompose over time and become assimilated with soil. It does not hinder the growth of plants.

The seedling raising method according to the present invention is not limited to the above embodiment. For example, in the above embodiment, the mat 5 for raising seedlings is merely laid at a predetermined place, but after the mat 5 for raising seedlings is laid, soil may be applied from above the mat 5. Further, in the above-described embodiment, the seedlings 4 are first grown using the seedling raising tray 1 in which a large number of pot parts 11 are provided, but instead of the seedling raising tray 1, small individual pots are used. May be used.

Further, in the above embodiment, the seedling-raising mat 5 integrally provided with a large number of seedlings 4 is laid at a predetermined place as it is, but the seedling-raising mat 5 is cut into a desired shape. I don't mind. Further, in the above embodiment, the seedling-raising mat 5 is put in the dish-shaped container to raise the seedlings, but the seedling-raising mat 5 alone may be used as long as the water-holding capacity of the seedling-raising mat 5 can be secured.

[0020]

As described above, the seedling raising method according to the present invention has a large number of seedlings or seedlings integrally provided on the seedling raising mat. Can be easily planted in place. That is, a large number of seedlings can be easily planted even on a sloping land and the workability is improved.

Moreover, since the seedling-raising mat and the sheet material are biodegradable, the seedling-raising mat and the sheet material are subsequently decomposed. Therefore, the mat for raising seedlings and the sheet material do not inhibit the growth of roots of the seedlings or cause pollution.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a preliminary seedling raising method for carrying out the seedling raising method according to the present invention and showing a state of raising seedlings in a seedling raising tray.

FIG. 2 is a partially enlarged plan view of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a perspective view showing an embodiment of a seedling raising method according to the present invention, in which seedlings preliminarily raised are set on the seedling raising mat.

FIG. 5 is a sectional view of FIG. 4;

FIG. 6 is a perspective view showing an example of a work for laying a mat for raising seedlings.

[Explanation of symbols]

 2 sheet material 3 soil 4 seedlings 5 seedling mat 51 holes

Claims (1)

[Claims] 1. A large number of biodegradable fibers obtained from seedlings or saplings preliminarily grown in a soil having at least a side surface surrounded by a sheet material having biodegradability and holes through which roots can pass. In the holes formed at appropriate intervals in the seedling-growing mat, the material of which is shaped to a desired thickness via an adhesive having natural degradability,
A method for raising seedlings, which comprises inserting the sheet material and raising the seedlings.