JPH09296449A - Greening material made of biodegradable resin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a greening material which can be easily produced and applied for vegetation and decomposed to almost assimilate in a slope by the time the vegetation is completed. SOLUTION: This greening material 10 is opened at the top and provided with the bottom and a nearly cylindrical shape to contain vegatation base materials like soil and fertilizer in the inside. And it is embedded as it is in a position like a slope where vegetation are planted for greening. Nearly almost whole greening material 10 is constituted of a net or a sheet with a number of pierced holes made of a biodegradable resin which is completely or partly decomposed by bacteria in the soil.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material for protecting the ground and slopes, and more particularly to a vegetation material suitable for protecting the ground and slopes by vegetation.

[0002]

2. Description of the Related Art The protection of natural grounds and slopes (hereinafter simply referred to as slopes) is sometimes performed by hardening concrete, but in order to make the landscape beautiful and the slopes are strengthened by rooting. For the reason that various kinds of protection can be performed, plant protection methods, so-called vegetation, have become popular.

In the conventional vegetation, a frame made of metal or synthetic resin is formed on the slope and the seeds of vegetation plants are sprayed with the vegetation base material or the seeds are put together with the vegetation base material. A large number of such vegetation bags were attached to a net made of synthetic resin, and the net was stretched on the slope, for example. In this case, the frame and net are used to prevent soil on the slope and seeds planted on the slope from being washed away by rainwater, etc. It is a thing.

However, since the components such as the frame and the net are made of a non-corrosive material such as metal or synthetic resin, they remain on the slope even after the vegetation is completed. Frames and nets remaining on such slopes will not cause any particular problems, but if possible, if they disappear into the slopes after vegetation is complete, the protected slopes will be in a more natural state. It is thought that the environment can be maintained in good condition.

[0005] Also, when constructing this type of vegetation method, it is important to consider that seeds of vegetation plants are used so that a sufficient germination rate can be secured. When using seedlings of vegetation plants, it is necessary to ensure a sufficient rooting rate. In other words, simply planting the seeds of the plant on the slope by means such as spraying does not mean that the vegetation method is completed, and that planting seedlings does not mean that it is enough. After the construction, seeds must be germinated and grown sufficiently, and seedlings must be rooted sufficiently.

The use of seedlings can solve the problem of germination rate and can be applied, but it is difficult to carry the seedlings on the slope, especially on steep slopes and natural ground. A large hole must be formed. Moreover, in order to prevent the soil around the roots from being dropped, it has been practiced to tie the roots of the seedlings with a rough rope, which adversely affects the growth of the buds, and There is a situation that prevents sufficient rooting.

[0007] In particular, a seedling planted in a pot made of a synthetic resin, which is called a "pot seedling", is planted in a pot, and the roots that have grown are disturbed by the inner surface of the pot until it is planted on the slope. , It becomes a rounded state in the pot like a dango, and even if this seedling is taken out of the pot and planted on the slope, its roots often do not grow sufficiently. Such a "pot seedling" has a large number of root systems, but it is thin and short, and it is known that the main root (supporting root) disappears even if it is planted on the slope as it is.

Furthermore, since seeds and seedlings for vegetation are living things, they must be constructed in the most suitable season (for example, March to May), and a large amount of them are required in that season. In other words, a large amount of seeds and seedlings for vegetation are needed in the optimal season for vegetation work, and trying to meet such demand is very expensive, for example, having to prepare a large seedling. It becomes.

Therefore, the inventors of the present invention fundamentally changed the components such as the frame and the net so that the vegetation work itself can be easily performed, and these components are completely lost after the vegetation is completed. In addition, as a result of various studies on how to improve the germination rate / rooting rate, as a result of the new discovery that the biodegradable resin brings good results, the present invention was completed. Of.

[0010]

SUMMARY OF THE INVENTION The present invention has been made based on the above-described background, and the problems to be solved are to make vegetation work easier and to complete vegetation after completion. It is to make the constituent materials familiar to the natural environment.

That is, the object of the invention according to claim 1 is that the manufacturing itself is simple, the construction work for vegetation can be easily carried out, and when the vegetation is completed, It is to provide a greening material that can be made to be the same as the surface.

The object of the invention according to claim 2 is to form the vegetation material according to claim 1 in the shape of a sandbag so that the vegetation material can be placed on the slope as it is. It is to provide a greening material that can protect itself and can be made to be almost the same as the slope when vegetation is completed.

Further, an object of the invention according to claim 3 is to provide a vegetation zone in which the vegetation material according to the above-mentioned claim 1 is sandbag-shaped and to which plant seeds for vegetation are attached in advance. By arranging them integrally, it is possible to protect the slope itself and vegetation at the same time simply by arranging it on the slope as it is. Moreover, when the vegetation is completed, it can be made almost the same as the slope. To provide greening materials.

[0014]

Means for Solving the Problems In order to solve the above problems, the means adopted by the invention according to claim 1 will be described with reference to the reference numerals used in the description of the following embodiments. It has a substantially bottomed cylindrical shape with an opening at the top so that the vegetation base material 20 such as soil or fertilizer can be put in, and the whole is embedded as it is in a place to be vegetated such as the slope 40, A net 12a, which is a greening material 10 used for greening by vegetation such as 40, in which substantially the entire greening material 10 is formed of a biodegradable resin that is completely or partially decomposed by microorganisms in the soil. , Or a sheet 12b having a large number of through holes 13, which is a greening material 10 ".

That is, since the greening material 10 is integrally formed of biodegradable resin, it is biodegraded by microorganisms such as bacteria and bacteria in the soil after the construction is completed by using the material. Then, part or all of it is changed to carbon dioxide and water. Therefore, cuttings 3 which are seedlings of vegetation plants
By the time when 2 and plant seeds 31 and the like grew sufficiently on the slope 40 (about 6 months to 1 year after construction), the greening material 10 had almost no shape on the slope 40. Face 40
Will be homogenized with. Therefore, if the greening material 10 according to the present invention is used for vegetation, the slope 40 can be brought into a state close to nature, and the landscape can be made beautiful.

Various types of biodegradable resins are conceivable for constituting such a greening material 10, and they are roughly classified into two types, that is, completely degradable and partially degradable. Completely degradable biodegradable resins include "polyhydroxybutyrate" derived from microorganisms, "blend product of starch and synthetic polymer" derived from natural polymers, and "polycaprolactone, polyglycol, Lactic acid "and so on. As the partially degradable biodegradable resin, there are blended products of starch and polyethylene, polyblended products of polycaprolactone and general-purpose plastics, and the like.

Of these biodegradable resins, for example, polyhydroxy plate, polyglycolic acid, and the like are difficult to mold, but the greening material 10 once forms the net 12a or the sheet 12b by the biodegradable resin. Since the net 12a or the sheet 12b is formed into a substantially tubular shape or a bag shape by the adhesive or sewn portion 14a or the connecting string or the binding member 15, the biodegradable resin is used. The molding difficulty of itself does not cause much problem. Further, since the greening material 10 is to be constructed as described later, there is no need to make it particularly strong. Therefore, the net 12a or the sheet 12b.
Considering the materials to be blended with, it is possible to solve the molding difficulty. For example, polylactic acid, which is the same biodegradable resin, has already been developed as a technique for molding it into a fibrous one. Therefore, the biodegradable resin having the above-mentioned molding difficulty is composed of polylactic acid. If fibers are mixed, it is possible to obtain the greening material 10 having the minimum necessary rigidity.

Slope 4 using and adopting this greening material 10
When performing the construction of No. 0, when the greening material 10 is in a pot shape (plant pot shape), the vegetation seedlings as shown in FIG. 2 are first prepared. That is, the vegetation base material 20 is filled in the greening material 10 and the cuttings 32 which are seedlings of the vegetation plant are planted in the vegetation base material 20 (FIG. 2).
In the case of (a)), the plant seeds 31 for vegetation are sown on the upper surface portion of the vegetation base material 20 (in the case of (b) of FIG. 2). The thus-prepared greening material 10 is directly embedded in the construction hole 41 formed in the slope 40 as shown in FIG. 5, for example.

When the greening material 10 has a simple sandbag shape or a sandbag shape having a vegetation zone 30 having plant seeds 31 attached to its inner surface, the greenery material 10 mainly contains soil. The vegetation base material 20 is put in, and the opening 11 is closed by the closing member 16 to close the vegetation base material 20.
Do not let out and literally sandbag. And
As shown in FIG. 7, these greening materials 10 are arranged on the slope 40 while the vegetation zone 30 is on the upper surface side.

After the construction as described above, if the greening material 10 is in the shape of a pot, from the upper end opening,
If the greening material 10 has a sandbag shape, a mesh scattered on the entire upper surface (when formed by the mesh 12a)
Alternatively, rainwater and the like enter the inside through the through hole 13 (when formed by the sheet 12b). Of course, it goes without saying that in any type of the greening material 10, the moisture in the soil is supplied to the inside from the mesh or the through holes 13 which are in the soil. Moreover, not only the oxygen in the soil required by the roots 33 of the plant seeds 31 or the cuttings 32 is supplied from the mesh or through holes 13 of the greening material 10, but, for example, as shown in FIG. The roots 33 of the vegetation plant can easily grow into the soil through the mesh or through holes 13.

In other words, the greening material 10 disappears in the slope 40 after the vegetation is completed, and the slope 40 protected by the use of this material can be brought close to a natural state. , The environment can be kept good. Also, when constructing this type of vegetation method, it is important to consider that when using seeds of vegetation plants, it is necessary to ensure sufficient germination rate. When using the seedlings of No. 1, it was necessary to ensure a sufficient rooting rate. However, after the construction using the greening material 10 according to the present invention, as will be described below, if the origin of the vegetation plant is a seed, it will germinate and grow sufficiently,
Also, if the vegetation plant is a seedling, it will be rooted enough.

That is, this greening material 10 is a cutting tree 32.
The vegetation base material 20 is not completely biodegraded until the plant seed 31 grows the root system 33 greatly and roots sufficiently on the slope 40 (for about 6 months after construction).
Therefore, the root 33 of the vegetation plant grows in a stable state. In addition, in the greening material 10 shown in FIG. 1, the cylindrical portion has a straight shape with the same inner diameter, but even if the cylindrical portion is tapered like a bucket and expands toward the opening. Good.
It is needless to say that by carrying out in this way, each greening material 10 can be stacked (stacked), and the dead space during transportation and storage can be reduced.

Further, according to the greening material 10 of the first aspect, when this is a pot-like material and the cuttings 32 as the source of vegetation plants are adopted, the whole is kept cold, Further, when the plant seed 31 is adopted as the source of the vegetation plant, if the vegetation base material 20 is not watered, the growth / rooting of the cutting 32 or the plant seed 3
The germination of No. 1 can be suspended, and the vegetation plants can be stored in a dormant state in case of large-scale seasonal use.
Of course, if the vegetation seedlings using the cuttings 32 are constructed in the warm season, the temperature for rooting is naturally added, and the cuttings 3
The rooting of No. 2 will start after the construction, and in the vegetation seedlings using the plant seeds 31, if water is poured into the vegetation base material 20, each plant seed 31 will germinate and start growing. Needless to say.

When the cuttings 32 are adopted as the vegetation plants and the above-mentioned vegetation seedlings are used, the cuttings 3 may be arranged in any manner with respect to the slope 40.
2 may be located at the center of the greening material 10. If the cuttings 32 are located at the center of the greening material 10, the roots 33 of the cuttings 32 have any mesh or through hole 13 of the greening materials 10.
Therefore, the greening material 10 does not interfere with the root 33 that normally extends downward.

As shown in FIG. 5, the vegetation seedlings constructed as described above may be directly buried in the construction holes 41 formed in the slope 40, and the construction for vegetation is completed. It will be. Of course, if the slope 40 is hard rock itself such as natural ground, the construction hole 41 must be made by mechanical drilling, but since the perforated construction hole 41 is rock, It will be useful for holding vegetation seedlings. Of course, since the vegetation base material 20 for vegetation plants is contained in the vegetation seedlings, bedrock does not pose a problem for the growth of vegetation plants.

Therefore, according to the greening material 10 of the present invention,
While having the advantage that the workability is improved as it is, even if it has a vegetation plant which is a living thing, it can be easily stockpiled in case of using it in a large amount.

Further, in order to solve the above-mentioned problems, the means adopted by the invention according to claim 2 is that, in the greening material 10 according to the above-mentioned claim 1, "the greening material 10 is sandbag shaped by a net 12a or a sheet 12b. That is what I said. "

That is, the greening material 10 is made of a biodegradable resin and has a net 12a as shown in FIG.
Alternatively, the sheet 12b as shown in FIG. 4B is formed into a sandbag shape as shown in FIG. 6A by the net 12a or the sheet 12b.

In order to apply the greening material 10 on the slope 40, it goes without saying that the vegetation base material 20 composed mainly of soil is placed inside the slope 40 as shown in FIG. Arrange on top. By doing so, rain or the like is poured into the inside through the mesh or through hole 13 on the upper surface side of the greening material 10, and the moisture or oxygen in the soil is supplied through the mesh or through hole 13 on the lower surface side of the green material 10. It will be done.

Of course, also in the greening material 10 according to the present invention, after the construction on the slope 40, it is biodegraded by microorganisms such as bacteria and bacteria in the soil, and part or all of it is carbon gas. The change to water and the homogenization with the slope 40 is substantially the same as the greening material 10 according to claim 1. As for the vegetation zone 30 of this greening material 10, since it has already been used to use paper or other plant fibers,
By adopting such a material, the vegetation zone 30 is also decomposed and homogenized with the slope 40, and the greening material 10 as a whole is homogenized with the slope 40.

Further, in order to solve the above-mentioned problems, the means adopted by the invention according to claim 3 is the same as the greening material 10 according to claim 1 or 2,
Is formed into a sandbag shape by a net 12a or a sheet 12b, and a vegetation zone 30 in which at least vegetation seeds 31 for vegetation are attached to the inner surface of the surface side portion.
Has been placed. ”

That is, the greening material 10 is made of a biodegradable resin, and the net 12a as shown in FIG.
Alternatively, the sheet 12b as shown in FIG. 4B is formed into a sandbag shape as shown in FIG. 6A by the net 12a or the sheet 12b. And this greening material 10 makes this the slope 40
When arranged above, the vegetation zone 30 attached with at least the plant seeds 31 is housed and arranged inside the portion which becomes the upper surface side.

In order to construct the greening material 10 on the slope 40, naturally, the vegetation base material 20 mainly composed of soil is put therein, as shown in FIG. In this way, the vegetation zones 30 are arranged on the slope 40 while being on the upper surface side. By doing so, rain or the like is poured into the vegetation zone 30 from the mesh or through hole 13 on the upper surface side of the greening material 10, and the moisture or oxygen in the soil from the mesh or through hole 13 on the lower surface side of the greening material 10. Will be supplied.

Of course, also in the greening material 10 according to the third aspect, after the construction on the slope 40, it is biodegraded by microorganisms such as bacteria and bacteria in the soil, and part or all of it is carbon gas. The change to water and the homogenization with the slope 40 is substantially the same as the greening material 10 according to claim 1. As for the vegetation zone 30 of this greening material 10, since it has already been used to use paper or other plant fibers,
By adopting such a material, the vegetation zone 30 is also decomposed and homogenized with the slope 40, and the greening material 10 as a whole is homogenized with the slope 40.

[0035]

BEST MODE FOR CARRYING OUT THE INVENTION Next, each invention will be described according to the embodiments shown in the drawings. FIG. 1 shows a perspective view of a greening material 10 according to claim 1. This greening material 1
0 is a net 12a or sheet formed by using a polylactic acid resin produced as a raw material, for example, by hydrolyzing a glucose source such as plant starch with an enzyme and then lactic acid-fermenting this to produce a dimer of lactic acid. 12b is used to form a pot.

Since it is technically established that the polylactic acid resin which is a biodegradable resin is made into fiber, it is made into a string to form the net 12a as shown in FIG. Of. The net 12a made of polylactic acid resin fiber is not limited to the shape shown in FIG.
For example, the through holes 13 of the sheet 12b shown in FIG.
It is also possible to adopt a braided one having a large number of openings corresponding to. Of course, the biodegradable resin has a sheet having a large number of through holes 13 through which water, oxygen, and roots 33 from the plant seeds 31 or cuttings 32 can pass, as shown in FIG. 4B. It can also be 12b.

Net 12a made of such biodegradable resin
Alternatively, as described above, the sheet 12b has a bottomed cylindrical shape as shown in FIG. 1 or a sandbag shape as shown in FIG. 6 by adopting a normal processing method as described above. And When the net 12a or the sheet 12b has a bottomed cylindrical shape as shown in FIG. 1, it is important to form the bottom portion 14, and the bottom portion 14 is, for example, as shown in FIG. It is formed by various means.

In the greening material 10 shown in FIG. 3 (a), the bottom portion 14 of the greening material 10 is formed so as to serve as the lid of the cylindrical body, and the ends thereof are bonded or sewn. The bottom portion 14 is configured to have a bottomed tubular shape as a whole. The greening material 10 shown in (b) of FIG. 3 has a tube formed of a net 12a or a sheet 12b, and a bottom frame 14b separately formed from a biodegradable resin or the like is integrated with this bottom, It is a cylinder with a bottom.
Furthermore, the greening material 10 shown in FIG.
This is a folding bottom 14c in which the portion to be 4 can be folded inside, and thereby the entire greening material 10 can be folded. In any of the above cases, the edges of the nets 12a or the sheets 12b that overlap each other on the side surface of the greening material 10 are connected by the connecting string or the binding member 15 as shown in FIG.

The greening material 10 can be made into a cylindrical shape as shown in FIG. 1 so that it can be easily manufactured, stored or constructed, or handled for that purpose. It is the most preferable for the reason, but it goes without saying that the cross section may be implemented as a square shape.

Slope 4 using such a greening material 10
In the case of 0 protection, it is advisable to put the vegetation base material 20 and vegetation plants into the protection material before applying it to the slope 40. This greening material 10 is the construction hole 4 of the slope 40.
Although it is embedded in 1, the construction of the construction hole 41 on the slope 40 is performed by forming the construction hole 41 on the slope 40 in a hard slope 40 such as rock like the construction hole 41 shown in the middle of FIG. You may make it perforate as a thing of a size substantially the same as a diameter. In addition, like the construction hole 41 shown at the top of FIG.
A relatively large construction hole 41 may be formed in No. 0, and the greening material 10 may be housed in the construction hole 41 and then constructed so as to be soiled in the remaining space.

The pot-shaped greening material 10 shown in FIG.
For example, it is used as shown in FIG.
That is, the greening material 10 shown in (a) of FIG. 2 is one in which the vegetation base material 20 having soil as a main component is put thereinto, and the cuttings 32 of vegetation plants are planted therein. In addition, this greening material 10 uses a vegetation zone 30 adopted in a sandbag-shaped greening material 10 described later as shown in FIG. You may carry out so that it may be embedded in 20. That is, as shown in FIG. 2, the greening material 10 shown in FIG. 1 is filled with a vegetation base material 20 composed of a soil improving material, a rooting agent, a water retention material, a fertilizer, and the like, as well as cuttings of vegetation plants. By planting or sowing 32 or plant seed 31, it becomes a vegetation seedling.

In other words, the greening material 10 shown in (a) of FIG. 2 employs the cuttings 32 as seedlings of vegetation plants, and roots to some extent before construction on the slope 40. Is. In addition, the greening material 10 shown in (b) of FIG. 2 has plant seeds 3 on the upper part of the vegetation base material 20 therein.
1 was sown. In this greening material 10, a protective material formed of natural fibers such as pulp or biodegradable resin may be arranged on the upper surface of the vegetation base material 20 filled in the greening material. This protective material prevents the vegetation base material 20 filled in the greening material 10 from spilling during transportation or construction, and is decomposed by microorganisms when the vegetation plants grow to some extent. is there. In addition, by covering each opening 11 on the greening material 10 side from the inside with such a protective material,
Needless to say, it is possible to prevent the vegetation base material 20 from spilling from each opening 11.

The reason why the cuttings 32 are adopted as seedlings for vegetation plants is that there is a desire to make flowering trees that are difficult to obtain seeds and germinate into vegetation plants. Specific examples include deciduous flowering trees such as Noriyutsugi and Azalea, and evergreen flowering trees such as Hisagaki, Quercus chinensis and Gardenia. If the mother tree for forming such a cutting tree 32 is kept cold during winter, it can be put into so-called hibernation, and the cutting tree 32 cut from this mother tree.
Is convenient because rooting takes place in about 1 to 2 weeks only by releasing the cold insulation. Also, with such a cutting 32 planted,
If the entire vegetation seedling is kept cool at a temperature of 1 to 3 degrees, it can be stored for a long period of 5 years or more.

Further, the greening material 10 has a sandbag shape,
That is, in the case of claim 2 or claim 3, as shown in FIG. 6, the opening 11 is bag-shaped so that it can be closed by a closing member 16 such as a closing string, a rubber band, a clipper or the like. In the greening material 10, the vegetation zone 30 having at least the plant seeds 31 attached thereto is housed and fixed. Of course, this greening material 1
As shown in (b) of FIG. 6, 0 is arranged on the slope 40 by first inserting the vegetation base material 20 mainly composed of soil therein and then closing the opening 11 by the closing member 16. As shown in FIG. 7, each greening material 1 is placed on the slope 40.
Vegetation is carried out by vegetation plants that have begun to grow from within 0.

In the greening material 10 according to the second aspect of the present invention, the plant seeds 3 attached to the inner vegetation zone 30 are constructed by arranging the ordinary sandbags on the slope 40.
1, the vegetation zone 30 of the greening material 10 is assimilated to the soil, and therefore does not obstruct the landscape on the slope 40 after the vegetation is completed.

When the vegetation base material 20 is put in the sandbag-shaped greening material 10 and arranged on the slope 40, naturally, as shown in FIG. 6B,
This is done so that the vegetation zone 30 is on the upper surface side.

[0047]

As described above, first, in the invention according to claim 1, as exemplified in the above embodiment,
"It is a substantially bottomed cylindrical shape with an upper opening so that the vegetation base material 20 such as soil and fertilizer can be put inside, and the whole is embedded as it is in a place to be vegetated such as a slope 40, A greening material 10 used for performing greening by vegetation such as a slope 40, wherein substantially the entire greening material 10 is formed of a biodegradable resin that is completely or partially decomposed by microorganisms in the soil. Net 12a or a large number of through holes 13
It has a structural feature in that it is configured by the sheet 12b having "," by which the manufacturing itself is simple, the construction work for vegetation can be easily performed, and when the vegetation is completed. Can provide the greening material 10 that can be made to be substantially the same as the slope.
In other words, the greening material 10 disappears in the slope after the vegetation is completed, so that the protected slope can be brought closer to a natural state, and the environment can be kept good.

Further, in the invention according to claim 2, the greening material 10 according to claim 1 is characterized in that it is made into a sandbag shape by the net 12a or the sheet 12b. Claim 1
In addition to being able to exhibit the same effect as the invention according to, it can be easily manufactured by the same manufacturing method as a sandbag that is generally used, and it can be applied to the slope 40 for vegetation. The construction can also be done easily.

Further, in the invention according to claim 3,
Regarding the greening material 10 according to claim 1 or 2, "vegetation in which a net 12a or a sheet 12b forms a sandbag shape, and at least the vegetation seeds 31 for vegetation are attached to the inner surface of the surface side portion. Obi 30
Has the characteristic feature of its construction. With this, the same effect as that of the invention according to claim 1 or 2 can be exhibited, and it is the same as a commonly used sandbag. Not only can it be easily manufactured by various manufacturing methods, but also construction on the slope 40 for vegetation can be easily performed.

[Brief description of drawings]

FIG. 1 is a perspective view of a greening material according to claim 1.

FIG. 2 shows an example of using the greening material of FIG. 1 as a vegetation seedling, (a) is a cross-sectional view when vegetation cuttings are used, and (b) is a vegetation plant. It is sectional drawing when a seed is employ | adopted.

3A and 3B are cross-sectional views showing a state in which the bottom portion of the greening material of FIG. 1 is embodied, in which (A) is a butt-bonded or sewn portion, and (B) is a bottom frame. thing,
(C) shows the case where the folding bottom is adopted.

4A and 4B show a net and a sheet formed of a biodegradable resin for forming a greening material, wherein (A) is a partially enlarged perspective view of the net and (B) is a partial perspective view of the sheet.

FIG. 5 is a partial cross-sectional view showing a construction example on a slope when a pot-shaped greening material is used.

FIG. 6 shows a sandbag-like greening material according to claim 2, wherein (a) is a perspective view thereof, and (b) is a vegetation base material placed therein and arranged on the slope. FIG.

FIG. 7 is a partial cross-sectional view when vegetation on the slope is performed by using the greening material shown in FIG.

[Explanation of symbols]

 10 Greening Material 11 Opening 12a Net 12b Sheet 13 Through Hole 14 Bottom 14a Adhesive or Sewn 14b Bottom Frame 14c Folding Bottom 15 Connecting String or Binding Member 16 Closing Member 20 Vegetation Base Material 30 Vegetation Belt 31 Plant Seed 32 Cuttings 33 Roots

Claims (3)

[Claims] 1. A substantially bottomed cylindrical shape having an opening at the top so that vegetation base materials such as soil and fertilizer can be put inside, and the whole is directly embedded in a portion such as a slope to be vegetated. A greening material used for greening by vegetation on the slope, etc., wherein almost the entire greening material is formed of a biodegradable resin that is completely or partially decomposed by microorganisms in the soil. A greening material characterized by being composed of a net or a sheet having a large number of through holes. 2. The greening material according to claim 1, wherein the greening material has a sandbag shape with a net or a sheet. 3. The greening material is sandbag-shaped by means of a net or a sheet, and a vegetation zone impregnated with at least vegetation seeds for vegetation is arranged on the inner surface of the surface side portion. The greening material according to claim 1 or 2.