JP2014114651A - Greening mesh-like body and vegetation inducing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a greening mesh-like body maintaining a three-dimensional structure during capturing seeds and decomposed after germination growth of the seeds, and a vegetation inducing method using the same.SOLUTION: A greening mesh-like body 2A is laid for capturing seeds naturally dispersed and greening a slope face 1 or the like. The greening mesh-like body 2A comprises: a mesh-like substrate 21 consisting of a readily decomposable substance which has a prescribed thickness and in which a number of mesh-like spaces 24 penetrating from a top face to an underside are formed; and coating layers 22, 23 consisting of a hardly decomposable resin coating one or both of the top face and the underside of the mesh-like substrate 21. In a vegetation inducing method, greening mesh-like bodies 2A, 2B are laid on a part or whole area of the slope face 1 or the like, or the greening mesh-like bodies 2A, 2B are laid on a part or whole area of a growth base 4 after spray establishment of the growth base 4 containing no seed in the slope face 1 or the like. Net stretching work is not performed prior to the spray establishment of the growth base 4.

Description

  The present invention relates to a greening net used mainly for planting slopes, slopes, and the like, and a vegetation guidance method using the same. In particular, the present invention relates to a construction method in which slopes and the like are greened by seeds that are naturally sprayed (flying, falling, sea drain by birds, etc.) from around the construction site without artificially introducing seeds for greening.

  Vegetation guidance is a general term for vegetation that encourages natural invasion of plants. For example, seed latent surface soil sowing, seedless vegetation base spraying method, net-based material (Patent Document 1) pasting method, seedless vegetation base spraying method and net-based material combination method (patent Document 2), a method of combining mulching spraying with seedless vegetation base material spraying technique (Patent Document 3), and the like.

  In the seedless vegetation spraying method, relatively light and easy-to-set wind-spreaded seeds (mainly Asteraceae herbs) invade the growth base at an early stage, while relatively large seeds ( Mainly, shies, oaks, oaks, etc.) flew from nearby trees, etc., and the slopes fell easily after falling, making it very difficult to naturally invade early. Patent Document 2 solves this problem by laying a net having a relatively thick three-dimensional structure to enable capture of large seeds.

JP-A-6-7027 JP-A-11-81327 JP 2012-2105023 A Japanese Patent No. 4630526 Japanese Patent No. 4330587

  However, in the vegetation guidance work, if a material made of a readily degradable substance (for example, natural fiber or biodegradable synthetic fiber) that is easily degraded by soil microorganisms is used for seed capture, the expected period after construction It was found that it decomposes easily in a shorter period of time. Although there are some differences depending on the materials, there is a new problem that the three-dimensional structure that effectively acts on seed capture can only be maintained for a short period of time.

  In particular, after constructing a seedless vegetation base spraying work using organic growth base material, a spraying construction was created when a construction with a relatively thick three-dimensional material composed of easily degradable fibers was adopted. The soil microorganisms contained in large amounts in organic bases (compost such as bark compost as the main material) will accelerate the decomposition of the materials than when directly pasted to the ground.

  This problem becomes serious when the amount of seed supply from the surrounding area (natural spraying amount) is small in terms of location. That is, at the early point of time (approximately 1 to 3 years) until sufficient seed capture necessary for greening is made, for example, the three-dimensional structure having a space penetrating from the upper surface side to the lower surface side of the net is collapsed (soilification) Therefore, the effect of capturing flying seeds is exhibited only for a relatively short period of time.

  Such a problem can be easily solved by using a hardly decomposable fiber as a material for capturing seeds. However, since the vegetation guidance method is originally applied to areas where natural disturbances such as in natural parks, where you want to prevent genetic disruption due to the introduction of plant materials from outside, that is, areas with a rich natural environment, A relatively thick material made of a hardly decomposable chemical fiber (chemical substance) that remains on the surface for a long time is undesirable. For this reason, when refractory fibers are unavoidably used, it is necessary to take measures such as ensuring the safety of the material and minimizing the amount used.

  In view of the current situation as described above, the present invention maintains a three-dimensional structure of a predetermined thickness that can capture large seeds until sufficient seed capture necessary for greening is performed, and sufficient seed capture is achieved. It aims at providing the netting body for greening which decomposes | disassembles into soil after that, and the vegetation guidance work using this.

In order to achieve the above object, the present invention provides the following configuration. The numbers in parentheses are reference numerals in the drawings described later, and are attached for reference.
A first aspect of the present invention is a greening net (2A) that is laid to capture naturally dispersed seeds and green a slope or the like (1), and has a predetermined thickness. A network substrate (21) made of an easily decomposable substance formed with a number of mesh-like spaces (24) penetrating from the upper surface to the lower surface, and either the upper surface or the lower surface of the network substrate (21), And a covering layer (22, 23) made of a hardly decomposable resin covering both.

  In the first aspect, it is preferable to further include a reinforcing net (25) disposed on the mesh substrate (21).

  In the first aspect, it is preferable that the mesh substrate (21) does not contain seeds.

  The second aspect of the present invention is a vegetation guidance method using the greening net (2A, 2B) of the first aspect, wherein the greening net is partly or entirely on the slope (1). It is characterized by laying the body (2A, 2B).

  The third aspect of the present invention is a vegetation induction method using the greening network (2A, 2B) of the first aspect, wherein the growth surface (4) does not contain seeds on the slope or the like (1). After spraying, the greening nets (2A, 2B) are laid on a part or the entire surface of the growth base (4).

  In the third aspect, it is preferable not to perform net stretching prior to spraying the growth base (4).

  The greening network according to the present invention has at least one surface of the reticulated substrate made of a readily decomposable substance having a predetermined thickness and formed with a large number of mesh-like spaces penetrating from the upper surface to the lower surface. Since the coating layer of the hardly decomposable resin is provided, the decomposition of the reticulated substrate by the microorganisms can be delayed.

  The rate of degradation of the network substrate by microorganisms increases in the order of coating the hardly decomposable resin on both surfaces, coating only the lower surface, and coating only the upper surface. It is the fastest when only the upper surface is coated, but the degradation by microorganisms can be delayed as compared with the case where the conventional upper surface is not coated.

  When the bottom surface of a reticulated substrate made of an easily decomposable substance is coated with a hardly decomposable resin, it is possible to insulate the natural soil that is the largest source of soil microorganisms and the part that is in direct contact with the growth base. Is big.

  If the top surface of a reticulated substance made of a reversible material is coated with a hardly decomposable resin, it is possible to insulate the contact with the sand and litter that scatters from the surroundings by wind or the like. It can block the supply of microorganisms and delay degradation.

  When both the upper surface and the lower surface of the net substrate made of the easily decomposable substance are coated with the hardly decomposable resin, both effects described above can be obtained.

  The side surface portion between the upper surface and the lower surface of the net-like substrate is not coated with a hardly decomposable resin. Even when corrosion (decomposition) has progressed from this portion, if both the upper surface and the lower surface are coated with a hardly decomposable resin, the three-dimensional structure can be easily maintained. As a result, the seed capturing function can be maintained over a long period of time.

  Further, since the side surface portion of the mesh substrate is not coated with the hardly decomposable resin, the rain water is absorbed by the mesh substrate and exhibits a water retention effect, and this rain water is also supplied to the natural ground and the growth base. As a result, the seeds captured in the mesh space of the mesh substrate can easily germinate and settle. Subsequent growth is not inhibited.

  The net substrate itself can also function as a part of the plant growth stage from the stage where decomposition does not proceed because the root system of the plant can be easily extended.

  As the coating layer of the hardly decomposable resin, it is sufficient that the coating layer is very thin. Therefore, a large amount of the hardly decomposable resin does not remain for a long period of time, and it can be applied in a natural park or the like.

  The greening net according to the present invention has an effect of enhancing the water retention and flexibility of the growth base when pasted on the growth base, and thus has an effect of creating an environment in which the trapped seeds are easily germinated.

FIG. 1 is a schematic plan view of a greening net in the first embodiment of the present invention. Fig.2 (a) is A sectional drawing of the netting body for greening shown in FIG. 1, is also an example of vegetation guidance, (b) is the elements on larger scale of (a). FIG. 3 is a schematic plan view of a greening mesh body according to the second embodiment of the present invention. 4A is a B cross-sectional view of the greening net shown in FIG. 3 and is an example of a vegetation guidance work, and FIG. 4B is a partially enlarged view of FIG. FIGS. 5 (a) and 5 (b) are other examples of vegetation guidance works using the greening nets in the first and second embodiments of the present invention, respectively. FIG. 6 is a graph showing the results of a water retention test (volumetric water content) using the greening net of the present invention. FIG. 7 is a graph showing the results of a water retention test (soil hardness) using the greening net of the present invention.

Embodiments of the present invention will be described below with reference to the drawings showing examples.
FIG. 1 is a schematic plan view of a greening net in the first embodiment of the present invention. Fig.2 (a) is A sectional drawing of the mesh body for greening shown in FIG. 1, and is also an example of vegetation guidance. FIG. 2B is a partially enlarged view of FIG.

  As shown in FIGS. 1 and 2, a net base 21 that is a main body portion of the greening net 2 </ b> A has a predetermined thickness, and a large number of net-like spaces 24 penetrating from the upper surface to the lower surface are formed. It consists of an easily degradable substance. The easily degradable substance is, for example, natural fibers such as hemp or natural resins, or biodegradable synthetic fibers or biodegradable synthetic resins (wherein the resin indicates a solid that is not fibrous). When used for vegetation guidance, the net-like substrate 21 does not contain seeds.

  The “predetermined thickness” is such a degree that a relatively large-sized seed (mainly oysters, oaks, oaks, etc.) is caught in the mesh-like space 24 and captured. The mesh substrate 21 forms a three-dimensional structure by a large number of mesh-like spaces 24 having a predetermined thickness (height). The planar shape of one mesh-like space 24 is not limited to the illustrated rhombus, and an ellipse, a rectangle, a band, or the like is also suitable. A larger area in plan view of one space 24 is more effective for capturing large-sized seeds. However, it is more desirable to disperse many small spaces 24 than to dispose a small number of large spaces 24 in the net substrate 21. It is effective. The size of the space 24 is, for example, about 1 to 10 cm in length in the case of an ellipse, rectangle, or rhombus, about 5 to 15 cm in width, and about 1 to 10 cm in length in the case of a strip. . The thickness is generally in the range of about 0.1 to 5 cm. A trapping effect can be expected at 0.1 cm or more for relatively small wind-spreaded seeds and at 0.5 cm or more for relatively large gravity-spreaded seeds. In the case where a relatively large general seed is expected to be captured, about 0.5 cm to 3 cm is preferable.

  As shown in FIG. 2 (a), the greening mesh 2A is laid on the surface of a natural ground 1 such as a slope, and is appropriately fixed using anchor pins 3 at predetermined locations.

  As shown in FIG. 2B, the greening mesh body 2A is provided with coating layers 22 and 23 of a hardly decomposable resin on the upper and lower surfaces of a mesh substrate 21 which is a main body portion. Here, the “lower surface” means the surface on the mountain side that touches the natural mountain or seedless growth base when the slope is attached, and the “upper surface” means the surface on the valley side that is directly exposed to the outside air. means.

  As a method of coating the net substrate 21 with the hardly decomposable resin, there is a method in which the hardly decomposable resin processed into a sheet shape is attached by a known method such as adhesion or heat fusion. Alternatively, a hardly decomposable resin may be coated on the network substrate 21 by coating or spraying. In the case of coating, in addition to forming the coating layer of the hardly decomposable resin on the surface of the network substrate 21, the coating layer may be formed by the permeation of the hardly decomposable resin into the surface layer portion of the network substrate 21.

  The hardly decomposable resin may be either a natural resin or a synthetic resin as long as a predetermined coating layer is formed on the network substrate. From the viewpoint of processing, a resin having thermoplasticity is preferable. The term “hardly decomposable resin” as used herein means a resin that has a longer period of degradation than an easily decomposable substance. That is, those other than easily degradable natural fibers and biodegradable resins are applicable. For example, known synthetic resins such as polyethylene, polypropylene, polyester, polyvinyl acetate, and acrylate esters are included.

  As another example, the hardly decomposable resin may be provided only on the upper surface coating layer 22 or only on the lower surface coating layer 23 of the net substrate 21.

  The decomposition rate of the net substrate 21 by microorganisms is such that when the hard-degradable resin is coated on both surfaces (coating layers 22 and 23), only the lower surface is coated (only the coating layer 23), and only the upper surface is coated (only the coating layer 22 is coated). ) Will be faster in the order. It is the fastest when only the upper surface is coated, but the degradation by microorganisms can be delayed as compared with the case where the conventional upper surface is not coated.

  When the bottom surface of the reticulated substrate 21 made of an easily decomposable substance is coated with a hardly decomposable resin (coating layer 23), the natural ground 1 that is the largest source of soil microorganisms and the growth base (the construction form of FIG. 5 described later) ) Can be insulated, so that the decomposition delay effect is great.

  In the case where the upper surface of the reticulated substance 21 made of an easily decomposable substance is coated with a hardly decomposable resin (coating layer 22), it is possible to insulate contact with earth and sand or litter that scatters from the surroundings by wind or the like. , Can block the supply of soil microorganisms through these, delay the decomposition.

  When both the upper surface and the lower surface of the net substrate 21 made of an easily decomposable substance are coated with the hardly decomposable resin (coating layers 22 and 23), both of the above-described effects can be obtained.

  The side surface portion between the upper surface and the lower surface of the net substrate 21 is not coated with a hardly decomposable resin. Even when corrosion (decomposition) has progressed from this portion, if both the upper surface and the lower surface are coated with a hardly decomposable resin, the three-dimensional structure can be easily maintained. As a result, the seed capturing function can be maintained over a long period of time.

  Further, since the side surface portion of the mesh substrate 21 is not coated with the hardly decomposable resin, the rain water is absorbed by the mesh substrate and exhibits a water retention effect. The rain water is a natural mountain 1 and a growth base (see FIG. 5 described later). Construction form) is also supplied. As a result, the seeds captured in the mesh space of the mesh substrate 21 can be easily germinated and fixed. Subsequent growth is not inhibited.

  With reference to Fig.2 (a), an example of the vegetation guidance work using the mesh body 2A for greening of 1st Embodiment is demonstrated.

  A network 2A for greening is pasted on a part or the whole surface of a natural ground 1 such as a slope to be constructed. It is effective when the natural ground 1 is earthy and sandy and has less irregularities, the greening net 2A is easily in close contact with the natural ground, and seeds come relatively easily from the periphery.

  FIG. 3 is a schematic plan view of a greening mesh body according to the second embodiment of the present invention. Fig.4 (a) is B sectional drawing of the netting body for greening shown in FIG. 3, and is also an example of vegetation guidance work. FIG. 4B is a partially enlarged view of FIG.

  The greening net 2B of the second embodiment further includes a reinforcing net 25 arranged on the net base 21 in addition to the configuration of the greening net 2A of the first embodiment described above. In the plan view of FIG. 3, only a part of the reinforcing net 25 is shown, but the entire net base 21 is covered.

  Although the material of the reinforcement net | network 25 is not specifically limited, For example, it is set as a rhombus metal mesh, a turtle shell metal net, a resin net etc., or these combination. The mesh size of the reinforcing net 25 is assumed to be at least larger than the particle size of seeds that are assumed to be captured.

  With reference to Fig.4 (a), an example of the vegetation guidance work using the mesh body 2B for greening of 2nd Embodiment is demonstrated.

  A greening net 2B is attached to a part of or a whole surface of a natural mountain 1 such as a slope to be constructed, and fixed using an anchor pin 3. The net base 21 and the reinforcing net 25 are integrated by the anchor pin 3. This method is effective when the natural ground 1 is earth and sand and has little irregularities, the greening net 2B (network base 21) and the natural ground are in close contact, and the seeds come relatively easily from the periphery. is there. Further, the durability of the greening net 2 </ b> B is improved by the reinforcing net 25. That is, even if the mesh substrate 21 is disassembled, the reinforcing net 25 remains longer than that. As a result, the effect of covering and protecting the slope can be maintained for a long time even if the seed capturing effect is reduced due to the decomposition of the mesh substrate 21.

  Fig.5 (a) is another example of the vegetation guidance | induction work using the mesh body 2A for greening in the 1st Embodiment of this invention. FIG.5 (b) is another example of the vegetation guidance work using the netting body 2B for greening in the 2nd Embodiment of this invention.

  In the vegetation guidance work shown in FIGS. 5 (a) and 5 (b), after the growth base 4 that does not contain seeds is sprayed on the surface of the natural ground 1 such as the slope to be constructed, the greening nets 2A and 2B are grown. Affixed to a part or the entire surface of the base 4 and fixed using the anchor pins 3. In this method, even when the natural ground 1 is a rocky slope or when there are many irregularities, the adhesion to the natural ground 1 is achieved even if the greening nets 2A, 2B (network base 21) are directly attached to the natural ground. It is suitable when it cannot be secured sufficiently. Insufficient adhesion between the natural ground 1 and the greening nets 2A, 2B is not preferable because the water retention function by the net base 21 is reduced by drying, and germination and growth of flying seeds are inhibited.

  The spraying of the growth base 4 in the vegetation guidance work in FIGS. 5A and 5B is performed by a vegetation base material spraying process (also referred to as a thick layer base material spraying process) or a guest soil spraying process. In these construction methods, usually, a net work such as a wire netting work or a resin netting work used as a greening foundation work is performed. In a preferred embodiment of the present invention, the growth base 4 is sprayed (omitted) without performing such netting. By pasting the greening nets 2A, 2B of the present invention on the growth base 4, the durability of the growth base 4 can be ensured without a net extension as a greening foundation. In particular, the greening mesh body 2B provided with the reinforcing net 25 shown in FIG. 5B is excellent in durability, so that it can reliably function as a substitute even if the greening foundation work is omitted.

  The spraying method of the growth base 4 which does not contain seeds is not particularly limited, and a publicly known method such as a vegetation base material spraying method or a guest soil spraying method can be adopted as described above. In particular, a vegetation base spraying work using an organic base material as a main material is preferable because high erosion resistance is exhibited by using a cement-based erosion preventive material.

  The greening net according to the present invention is suitable for a vegetation guidance method for greening with naturally dispersed seeds. However, as another embodiment, the net base is attached to the net base in advance so that the net base is a vegetation mat. It can be used in the same way as a (vegetation net).

  One Example of the vegetation guidance method shown in FIG. 5 is shown. In this example, an organically grown seedless vegetation base sprayer was used for spraying the growth base.

The material composition per 1 m ^{3 of the} organic seedless vegetation base sprayer is as follows.
Organic base material for growth 2000L
Slow release fertilizer 7kg
Cement-based anti-erosion material 120kg
Formulation water appropriate amount

As an erosion preventing material for vegetation base material spraying, a method using a vinyl acetate resin or ordinary Portland cement has been applied for a long time. Cementitious erosion material used in the seed without vegetation substrate blowing Engineering of the present invention is usually adjusted in a range of 60~180kg / m ^3, in particular, the range of 60~120kg / m ³ are preferred. Viscosity of the material is increased by mixing cement-based anti-erosion material with organic growth base material, adding water and spraying it.

  In addition to the use of this cementitious erosion preventive material, the use of the greening net according to the present invention makes it possible to omit netting work (such as wire netting work) that is commonly used in vegetation base spraying. Even after construction, high erosion resistance can be exhibited.

  The type of the cement-based erosion preventive material is not particularly limited, but a material that does not cause germination growth inhibition of the plant due to alkali damage is desirable, and the “organic material-based erosion preventive material” described in Patent Document 4 is suitable.

  6 shows another embodiment of the vegetation guidance work shown in FIG. In this example, an inorganic-based seedless vegetation base sprayer was used for spraying the growth base.

The material composition per 1 m ^{3 of the} inorganic seedless vegetation base sprayer is as follows.
Earth and sand (on-site generated soil, etc.) 2000L
Soil improver 600L
Slow release fertilizer 7kg
High polymer erosion inhibitor 2kg
Aggregated material 0.2kg
Formulation water appropriate amount

  Inorganic vegetation base spraying work, mainly composed of earth and sand, generally tends to be inferior in erosion resistance compared to organic vegetation base spraying work. By spraying, it has a nodule structure suitable for the germination growth of flying seeds, and a highly durable growth base can be created.

  When applying an inorganic vegetation base material spraying method, the “slope greening method” described in Patent Document 5 is suitable.

The water retention effect of the greening network according to the present invention was tested.
<Test method>
Growth base A crushed stone was packed in a plastic container (length 100 cm × width 100 cm × depth 30 cm) having a lot of drainage holes on the bottom, leaving only the seedling growth base spray thickness. On the crushed stone, using the mortar concrete spraying machine, the organic seedless vegetation base spraying material of Example 1 was sprayed as a growth base, and the surface was shaped to be smooth.

-Greening network body The greening network body 2B shown in Figs. 3 and 4 was pasted on the growth base. The thickness of the net base 21 of the greening net 2B used was about 0.7 cm (the total thickness of the greening net 2B was about 1 cm). As the reinforcing net 25, a diamond wire net having a diameter of 2 mm and a mesh of 50 mm was used.

・ Test conditions Containers were installed outdoors, watering was not performed at all, and water supply was limited to rainwater. Therefore, it can be said that the test was performed under conditions that make it easier to dry than usual. After construction, the volumetric moisture content of the growth base was measured periodically with a soil moisture meter (DIK-311D). Moreover, when measuring the volume moisture content, soil hardness (Yamanaka type soil hardness meter) was also measured.

・ Test Zone No. Section 1 Seedless growth base 3 cm thick + Greening network No. 1 2nd seedless growth base 3cm thickness only Section 3 Seedless growth base 5 cm thick + Greening network No. 3 4th seedless growth base 5cm thickness only 5th seedless growth base 7cm thickness + greening mesh No. 6th seedless growth base 7cm thickness only

<Test results and discussion>
FIG. 6 is a graph showing the progress of the measured volumetric water content.
FIG. 7 is a graph showing the progress of the measured soil hardness.

  Looking at the transition of the volumetric water content in FIG. 6, it can be seen that when the seedless growth base has the same thickness, the water content is higher and the water retention effect is higher when the netting net is attached.

  No. District 1 and No. 1 4th district, no. 3rd district and No. Since the transition of the volumetric water content in the six districts is almost the same on average, it can be considered that the greening net of about 1 cm thickness has a water retention effect equivalent to 2 cm thickness of the seedless growth base. it can.

  This is because, for example, when the present invention is applied to a location where spraying of a growth base of 5 cm thickness was necessary when performing normal slope planting in which seeds were blended using a vegetation base material spraying method, 3 cm It shows that the vegetation guidance method can be applied by combining the spraying of thick seedless growth base and the greening net. This is effective for labor saving and cost reduction.

  7 shows that when the thickness of the seedless growth base is the same, the soil hardness becomes softer when the greening net is attached. It is said that the growth state of a plant in terms of soil hardness is generally suitable for planting trees because the root system has a good elongation when it is 10 to 23 mm for viscous soil and 10 to 27 mm for sandy soil. The application of the present invention shows that the soil hardness can be maintained in an optimum state for germination and growth of plants even under conditions that are easy to dry.

  The vegetation induction work that relies on only the flying seeds for the germination and growth of the plant is placed in a low vegetation coverage state for a long period of time compared to a normal vegetation base spraying technique that forms a plant community at an early stage by mixing seeds. Therefore, the growth base is easy to dry, and the settled seeds are also difficult to germinate because they hardly absorb moisture. By applying the present invention, in addition to improving the water retention of the seedless growth base, the soil hardness of the growth base is also easily germinated and grown. Therefore, the greening net of the present invention has an effect of creating an environment in which the trapped seeds are likely to germinate in addition to the seed trapping promoting effect.

  In this test, the greening net 2B was used, but the water retention function of the reinforcing net 25, which is a rhombus metal net, is considered to be zero, so the greening net 2A shown in FIGS. 1 and 2 may also be used. The same can be considered.

1 Slope, etc. (natural ground)
2A, 2B Revegetation network 21 Reticulated substrate 22 Upper surface covering layer 23 Lower surface covering layer 24 Reticulated space 25 Reinforcement net 3 Anchor pin 4 Seedless growth base

Claims (6)

A greening net (2A) laid to capture naturally dispersed seeds and green the slope (1),
A reticulated substrate (21) made of an easily decomposable substance having a predetermined thickness and a large number of reticulated spaces (24) penetrating from the upper surface to the lower surface;
A greening mesh body comprising: a coating layer (22, 23) made of a hardly decomposable resin that covers either the top surface or the bottom surface of the mesh substrate (21) or both the top surface and the bottom surface.   The greening net (2B) according to claim 1, further comprising a reinforcing net (25) disposed on the netting base (21).   The reticulated net (2A, 2B) according to claim 1 or 2, wherein the reticulated substrate (21) does not contain seeds.   A vegetation guidance method using the greening network (2A, 2B) according to any one of claims 1 to 3, wherein the greening network (2A, 2B, A vegetation guidance method characterized by laying 2B).   A vegetation induction method using the greening net (2A, 2B) according to any one of claims 1 to 3, wherein a growth base (4) containing no seeds is sprayed on the slope (1). Then, the vegetation guidance method characterized by laying the greening nets (2A, 2B) on a part or the whole of the surface of the growth base (4).   6. The vegetation induction method according to claim 5, wherein the netting work is not performed prior to spray formation of the growth base (4).

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