JP2022092253A - Vegetation mat - Google Patents

Abstract

To provide a vegetation mat that makes it easy to create, for example, a green landscape, immediately after construction regardless of the season, and subsequently maintain a certain degree of it.SOLUTION: An artificial turf 4 with a space part 3 that is formed in a net shape and where the target species can grow in a plane view was laminated above a vegetation part 2 provided with seeds 1 of a target species. The artificial turf 4 is installed on the slope so that its mesh has an oblique portion extending in an oblique direction with respect to a contour line in a plan view. It has flexibility as a body and can be wound into a roll.SELECTED DRAWING: Figure 1

Description

The present invention relates to, for example, a vegetation mat used by laying it on a slope or the like for greening.

The vegetation mat disclosed in Patent Document 1 grows fast-growing turf and the like in the first vegetation area where intentional sowing and the like are performed, and is surrounded by the first vegetation area and does not perform intentional sowing and the like. By sprouting and growing flying seeds and buried seeds in the area, the natural vegetation plants that inhabit the area will be used for greening, and the natural landscape will be protected and restored.

Japanese Patent No. 5855597

However, in the above vegetation mat, when sown in the first vegetation area to grow turf or the like, neither the first vegetation area nor the second vegetation area may be covered with green immediately after construction. At that point, it is not always possible to improve the landscape. In addition, if a plant is attached instead of being sown in the first vegetation area, extra labor and cost are required for the attachment.

Furthermore, with the above vegetation mat, it is practically difficult to accelerate greening in the second vegetation area that relies on buried seeds and flying seeds, and the abundance of buried seeds, the amount of captured flying seeds, and the amount of soil Depending on the properties (pH value, fertilizer distribution of potassium nitrogen phosphate, soil hardness, etc.), rainfall, temperature, etc., the plants in the 1st vegetation area will decline before sufficient greening of the 2nd vegetation area is achieved. There is also a risk of doing it.

Moreover, in the above vegetation mat, even if the plants grow sufficiently in both the first vegetation area and the second vegetation area, depending on the type of the plant, the whole becomes withered due to the change of seasons. There is also a risk that it will not be possible to maintain the improved landscape.

The present invention has been made in consideration of the above-mentioned matters, and an object thereof is to provide a vegetation mat which can easily maintain a certain degree of green landscape, for example, regardless of the season immediately after construction. To do.

In order to achieve the above object, the vegetation mat according to the present invention is an artificial turf having a space portion formed in a net shape above the vegetation portion provided with seeds of the target species and in which the target species can grow in a plan view. Laminated (claim 1).

The vegetation mat may be installed on a slope so that the mesh of the artificial turf has an oblique portion extending in an oblique direction with respect to the contour line in a plan view (claim 2).

The vegetation mat may be provided with a penetration suppressing member that enables germination penetration of the target species and suppresses germination penetration of buried seeds of competing species having a wider leaf width than the target species (claim 3).

The vegetation mat may be flexible as a whole and may be rolled up in a roll shape (claim 4).

The vegetation mat according to the present invention is formed by laminating an artificial turf having a space portion in which the target species can grow in a plan view above the vegetation portion provided with the seeds of the target species. , Tall fescue or at least one of Bermudagrass (claim 5).

In the present invention, it is possible to obtain a vegetation mat that can easily maintain a certain degree of green landscape, for example, after creating a green landscape immediately after construction regardless of the season.

That is, in the vegetation mat of the invention according to each claim of the present application, the target species (introduced seed) can be grown by the vegetation portion.

Further, in the vegetation mat of the present invention, the artificial turf can form green to some extent immediately after construction, and the bare land becomes inconspicuous, and the place has adverse conditions such as steep slope, strong acidity, strong alkalinity, and dry land. It is also possible to construct it, and even if the plants grown by the vegetation mat grow unevenly, it is diluted by the artificial turf, and the green can be maintained regardless of the season, so that the appearance can be greatly improved.

In other words, the vegetation mat of the present invention makes it easy to create a green landscape, for example, regardless of the season immediately after construction, and then maintain it to a certain extent, while adopting a simple structure such as a vegetation part and artificial turf. It is something to do.

In the vegetation mat of the invention according to claim 2, the mesh of the artificial turf has an oblique portion extending in an oblique direction with respect to the contour line in a plan view, and water flows from the shoulder side to the tail side of the slope on the surface layer of the slope. When it flows, it flows down along the mesh of this artificial turf, which reduces the flow velocity and disperses the amount of water, making it difficult for water to occur. Such an effect is particularly effective when treating a large amount of water such as torrential rain and spring water.

For the target species, the growth of the competing species is more advantageous for its own growth. However, in the vegetation mat of the invention according to claim 3, the growth of the competing species can be suppressed by the penetration suppressing member. Moreover, since the target species can penetrate the penetration suppressing member, the penetration suppressing member does not inhibit the growth of the target species.

The vegetation mat of the invention according to claim 4 can easily improve the storability, transportability, carry-in to the site, and workability as a product.

In particular, when the target species are Tall fescue (a variety resistant to the cold of winter) and Bermudagrass (a variety resistant to the heat of summer) as in the vegetation mat of the invention according to claim 5, both of these grow relatively. It is a so-called western turf that is fast, and stable growth of these target species leads to early greening and early stability of the slope, so it is rational to suppress the growth of competing species as much as possible immediately after construction. However, in the present invention, it is possible to more reliably achieve stable growth of the target species, and thus early greening and early stabilization.

It is an exploded perspective view of the vegetation mat which concerns on one Embodiment of this invention. In (A) to (C), the second vegetation mat of this example, the first vegetation mat of this example, and the vegetation mat of the control example used for the test of the above vegetation mat are laid in the test plot 2 and the test plot, respectively. 1. It is a photograph showing the situation of the control plot. (A) and (B) are photographs showing the structure and dimensions of the second vegetation mat of this example. It is a photograph showing the situation of each ward 6 months after the construction of the test. It is a photograph showing the situation of each ward 8 months after the construction of the test. It is a photograph showing the situation of each ward 10 months after the construction of the test. It is an exploded perspective view of the vegetation mat which concerns on the modification of this invention.

Embodiments of the present invention will be described below.

The vegetation mat of this example is obtained by integrating each member shown in FIG. 1, and is used, for example, in a state of being laid on a slope. That is, as shown in FIG. 1, the vegetation mat is formed in a net shape above the vegetation portion 2 provided with the seed (introduced seed) 1 of the target species, and the space portion 3 in which the target species can grow in a plan view is provided. The artificial turf 4 to be held is laminated.

Target species include, for example, tall fescue, which is resistant to cold in winter, Bermudagrass, which is resistant to heat in summer, creeping redfest, bahia grass, kikuyu grass, red top, bentgrass, centipede grass, kentucky bluegrass, rosegrass, and zoysia japonica. Etc. can be mentioned as monocotyledons.

Examples of competing species include dicotyledons such as Mallotus japonicus, Bridal wreath, Alnus firma, Kiri, Harlequin, Yamahannoki, Quercus serrata, and Black locust.

As shown in FIG. 1, the vegetation portion 2 has an introduced seed 1, a thin cotton (or non-woven fabric) sheet 6, and a net (for example, made of polyethylene) 7 in this order from the ground side (the side facing the ground at the time of installation). .. The introduced seed 1 is adhered to the lower (ground) side of the thin cotton sheet 6 with an adhesive (water-soluble adhesive, etc.), and the introduced seed 1 is not held between the thin cotton sheet 6 and the net 7, and both are not held. 6 and 7 are adhered with an adhesive (water-soluble adhesive, etc.).

Here, the thin cotton (nonwoven fabric) sheet 6 has a basis weight of, for example, 10 to 50 g / m ² , and the net 7 has a basis weight of, for example, 10 to 20 mm × 15 to 25 mm. Can be.

If Russell knitting is used for the net 7 instead of plain weave or Karami weave, the elasticity is good and the mesh can be expanded, so that the stem of the penetrating plant can grow thick. You can also get the merit that it is difficult to win consecutively

Further, as shown in FIG. 1, a plurality of fertilizer bags 8 are attached to the net 7 at intervals in the longitudinal direction thereof. In this mounting, for example, the net 7 is composed of a double net all over or partially, and a long fertilizer bag 8 extending in the lateral direction of the net 7 is inserted between the double nets (double net portion). This can be easily done by forming an accommodating portion (bag-shaped portion or the like) 9 for accommodating and holding, and accommodating the fertilizer bag 8 in the accommodating portion (bag-shaped portion or the like) 9.

In addition to fertilizer, the fertilizer bag 8 may contain a soil conditioner, a water-retaining material, or the like, or may contain the introduced seed 1.

On the other hand, in the artificial turf 4 of this example, for example, a large number of net-like base materials (a base cloth configured to have a net-like shape by providing a plurality of notched portions, a rope woven in a net-like shape, etc.) are used. It is possible to use a pile in which at least a part of the pile protrudes from the base material by planting a pile or the like so as to imitate a turf leaf.

In addition to polypropylene and polyethylene, fluororesins such as acrylic resin, polycarbonate, polyvinyl chloride, and Teflon (registered trademark), which have relatively excellent weather resistance, can be used as the material of the artificial turf 4. Here, it is preferable that the entire artificial turf 4 or the portion of the artificial turf 4 that is particularly exposed to ultraviolet rays (pile in this example) has high weather resistance and is particularly resistant to ultraviolet deterioration, and the pile is thickened. The higher the level of satisfaction, such as the densely bundled pile layers and the thicker pile layers, the more effective it is in suppressing UV deterioration. If, for example, the artificial turf 4 is uncertain in terms of suppressing deterioration of ultraviolet rays, a treatment such as mixing a weathering agent with the pile material or applying the weathering agent to the pile surface may be performed.

The color of the artificial turf 4 is preferably broad and green in terms of the landscape, but depending on the construction site, brown or other colors that match the surrounding landscape can be selected. Of course, the present invention is not limited to this, and for example, a dye whose color changes depending on the season (temperature) may be mixed or applied to the pile of the artificial turf 4.

The mesh of the artificial turf 4 (base material) may be rectangular, rhombic, honeycomb, other polygonal, circular or the like. In any case, the artificial turf 4 may have a substantially mesh shape as a whole, and the mesh may form a space portion 3 having a size that enables the growth of the target species, and the artificial turf 4 (specific artificial turf 4) It is conceivable that the mesh size (mesh) of the base material) is 3 to 30 cm × 3 to 30 cm in length and width, preferably 8 to 20 cm × 8 to 20 cm. When the vegetation mat is laid to prevent rockfall, the artificial turf 4 having the optimum mesh size may be selected in consideration of the size of the stone on the slope of the site.

In addition, when the vegetation mat is installed on a slope, the mesh may be orthogonal to the contour lines in a plan view (not parallel to the contour lines but orthogonal to the contour lines) regardless of the shape of the mesh of the artificial turf 4 (base material). It is preferable to install it on a slope so as to have an oblique portion extending in a direction not applicable). This is because if the mesh of the artificial turf 4 has an oblique portion extending diagonally with respect to the contour line in a plan view, when water flows from the shoulder side to the tail side on the surface layer of the slope, the artificial turf 4 This is because by flowing down along the mesh, the flow velocity is reduced and the amount of water is dispersed, making it difficult for water to be generated. Such an effect is particularly effective when treating a large amount of water such as torrential rain and spring water. In this example, the mesh of the artificial turf 4 (base material) is shown in the partially enlarged view in FIG. Since the vegetation mat has a hexagonal shape, the mesh of the artificial turf 4 always has the diagonal portion regardless of the orientation of the vegetation mat.

The bulkiness of the artificial turf 4 (thickness above and below the artificial turf 4) is considered to be 1 to 7 cm, preferably 2 to 5 cm. By setting the bulk of the artificial turf 4 to 1 cm or more, the effect of capturing the flying seeds by the artificial turf 4 and the effect of producing green on the landscape can be surely obtained. Further, by setting the bulk of the artificial turf 4 to 7 cm or less, it becomes easy to allow the inside of the mesh to be irradiated with sunlight from an oblique direction and to secure a sufficient amount of light for the growth of plants.

As the artificial turf 4, various artificial turfs such as short-pile artificial turf and long-pile artificial turf can be adopted. Artificial turf 4 that imitates Western turf such as glass may be used.

The vegetation mat of this example may be completed in advance at a factory or the like, transported in that state and laid at the site, or may be transported unfinished and completed at the site. When it is completed in, the laying may be completed at the same time as the completion.

Here, when the vegetation portion 2 and the artificial turf 4 are integrated in advance at a factory or the like to complete the vegetation mat, the means for the integration include adhesion using an adhesive (for example, a glue material), thermocompression bonding, and the like. It is conceivable to use fasteners (tag pins, staplers, etc.), holding tools (C-rings, etc.), binding tools (sewing thread, wire, etc.). In addition, when the vegetation part 2 and the artificial turf 4 are brought into the site without being integrated and they are integrated at the site to construct a vegetation mat, for example, an anchor pin (not shown) is appropriately placed. The vegetation portion 2 and the artificial turf 4 may be individually fixed to the slope, or an anchor pin (not shown) may be appropriately placed with the artificial turf 4 stacked on the vegetation portion 2. Both 2 and 4 may be fixed together, or the artificial turf 4 may be connected to the vegetation portion 2 by binding or the like after the vegetation portion 2 is fixed to the slope by driving an anchor pin.

In any case, it is preferable to install the vegetation mat on the slope so that the fertilizer bag 8 follows the contour lines. Here, the vegetation mat, which has been integrated in advance at a factory or the like and has flexibility as a whole, is transported in a rolled state, and when it is laid on the slope, it is deployed from the shoulder to the tail. It is rational to simplify the transportation and installation of vegetation mats. Then, for example, in a vegetation mat in which the fertilizer bag 8 extends in a direction orthogonal to the contour line (longitudinal direction of the vegetation mat), it cannot be wound into a roll and developed as described above (or becomes difficult). In a vegetation mat in which the fertilizer bag 8 extends along the contour line (in the lateral direction of the vegetation mat), it is easy to wind it into a roll and deploy it as described above.

In the vegetation mat of this example having the above configuration, the target species (introduced seed 1) can be grown by the vegetation section 2, and the target species can be grown by the fertilizer or the like supplied from the fertilizer bag 8. It can be ensured.

In addition, in the vegetation mat of this example, the artificial turf 4 can form green to some extent immediately after construction, and the bare land becomes inconspicuous, and the place has adverse conditions such as steep slope, strong acidity, strong alkalinity, and dry land. Even if the plants grown by the vegetation mat grow unevenly, it is diluted by the artificial turf 4, and the green color can be maintained regardless of the season. ..

That is, the vegetation mat of this example adopts a simple structure such as a vegetation part 2 and an artificial turf 4, and after creating a green landscape, for example, regardless of the season immediately after construction, it is possible to maintain it to a certain extent. It's easy.

Moreover, in the vegetation mat of this example, the impact of raindrops is alleviated by the pile of the artificial turf 4, and the effect of preventing surface erosion and initial surface landslide is produced.

Further, in the vegetation mat of this example, the artificial turf 4 can promote the germination and growth of the target species by the water retention effect, the drying prevention effect, and the frost heaving suppression effect accompanying the improvement of the heat retention.

In addition, in the weed-proof greening mat of this example, since the vegetation portion 2 is covered with the artificial turf 4, there is an advantage that it is less susceptible to animal damage such as feeding damage and digging up.

Next, using the vegetation mat of this example and the comparative example, the tests conducted on the landscape and the like and the results thereof will be described.

In the test, the vegetation mat of the control example (comparative example) having the seed 1 of the target species including tall fescue and Bermudagrass and having no artificial turf 4, and the artificial turf 4 having a sparse mesh were integrated on the vegetation mat of the comparative example. Three types of vegetation mats, the first vegetation mat of this example and the second vegetation mat of this example in which the artificial turf 4 with a dense mesh is integrated on the vegetation mat of the comparative example, are sloped. As shown in FIGS. 2 (C), (B), and (A), the areas laid in each area were used as control areas, test areas 1, and test areas 2, and the average communities in each area for about 10 months. The height and vegetation coverage were followed up. The vegetation coverage of the test plots 1 and 2 was evaluated as the state of vegetation in the space 3 formed in a mesh pattern.

Here, FIGS. 3 (A) and 3 (B) show photographs of the second vegetation mat of this example laid in the test plot 2 as viewed from the ground side (lower side). As shown in these, the vertical width (longest width inside the mesh) of the mesh of the mesh-like base material of the artificial turf 4 of the second vegetation mat is 55 mm, the horizontal width (shortest width inside the mesh) is 30 mm, and the artificial turf 4 The thickness (vertical width) was 40 mm. Further, although there is no photograph, the vertical width of the second vegetation mat of this example laid in the test plot 1 was 110 mm, the horizontal width was 60 mm, and the thickness of the artificial turf 4 was 40 mm.

Tables 1 and 4 show the state after 6 months of construction, Tables 2 and 5 show the state after 8 months of construction, and Tables 3 and 6 show the state after 10 months of construction, respectively.

From FIGS. 4 to 6, it can be seen that the second and first vegetation mats of this example using the artificial turf always capture more litter than the vegetation mat of the control example having no artificial turf 4. .. In addition, as shown in Tables 1 to 3, the average community height of the second and first vegetation mats of this example using the artificial turf 4 is higher than that of the control example vegetation mat without the artificial turf 4. Since the vegetation coverage is also high, it can be seen that the vegetation mat of this example is excellent in plant growth. In addition, in this test, deer were damaged by deer in both the control group and the test groups 1 and 2, but in the control group, the whole area was damaged by feeding and some strains were pulled out. Since the traces of feeding damage in the test plots 1 and 2 remained at the height of the artificial turf 4, it was also found that the vegetation mat of this example has an effect of reducing feeding damage.

It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be variously modified and implemented without departing from the gist of the present invention. For example, the following modification examples can be given.

As shown in FIG. 7, a penetration suppressing member that enables germination penetration of the target species between the vegetation portion 2 and the artificial turf 4 and suppresses germination penetration of the buried seeds of the competing species having a wider leaf width than the target species. 5 may be provided. The penetration suppressing member 5, the vegetation portion 2, and the artificial turf 4 can be integrated in the same manner as, for example, the above-mentioned integration of the vegetation portion 2 and the artificial turf 4.

The penetration suppressing member 5 is a mesh-like member having a mesh size of 1 to 3 mm × 1 to 3 mm, preferably 1.5 to 2 mm × 1.5 to 2 mm, and the material thereof is acrylic resin, polyester, polyethylene or the like. Is conceivable.

As described above, if the penetration suppressing member 5 is a mesh-shaped member, the meshing thereof can be appropriately set to enable the passage of the target species and suppress the penetration of competing species having a wider leaf width than the target species. Such things can be easily realized. And such an effect gives stress to competing species (trees, large-diameter weeds, etc.) that are going to germinate by using a mesh-like member (highly durable) that does not cause misalignment in the penetration suppressing member. It is more reliable because it can suppress hypertrophic growth.

For the target species, it is advantageous for the growth of the competing species if the competing species does not grow. However, in the example shown in FIG. 7, the penetration suppressing member 5 can suppress the growth of the competing species. Moreover, since the target species can penetrate the penetration suppressing member 5, the penetration suppressing member 5 does not inhibit the growth of the target species.

In particular, when the target species are Tall fescue (a variety that is resistant to the cold of winter) and Bermudagrass (a variety that is resistant to the heat of summer), these are so-called western turf that grow relatively quickly. Since stable growth leads to early greening and early stability of the slope, it is rational to suppress the growth of competing species as much as possible immediately after construction. It will be possible to achieve more reliable growth, and eventually early greening and early stabilization.

In addition, in the example of FIG. 7, first, the strength of the materials themselves of the two members, the artificial turf 4 and the penetration suppressing member 5, can produce the effect of stabilizing the slope immediately after the construction.

The penetration suppressing member 5 is not limited to the mesh shape, and the penetration suppressing member 5 may be formed of, for example, a non-woven fabric.

In the examples of FIGS. 1 and 7, the net 7 of the vegetation portion 2 may be omitted, and the thin cotton sheet 6 of the vegetation portion 2 may be directly bonded (adhered or the like) to the artificial turf 4 or the penetration suppressing member 5.

In the examples of FIGS. 1 and 7, the colors of the fertilizer bag 8 and the penetration suppressing member 5 described above are preferably broad and green in terms of the landscape as in the artificial turf 4, but are brown depending on the construction site and match the surrounding landscape. You can select the color and so on.

In the examples of FIGS. 1 and 7, the fertilizer bag 8 may not be provided. Further, when the fertilizer bag 8 is provided, it is not held by the vegetation portion 2, but is between the vegetation portion 2 and the artificial turf 4 (in the example of FIG. 7, between the vegetation portion 2 and the penetration suppressing member 5 or between the penetration suppressing member 5 and the artificial turf 4). It may be placed between the turf 4).

Needless to say, the above-mentioned modifications may be combined as appropriate.

1 Seeds of the target species (introduced seeds)
2 Vegetation part 3 Space part 4 Artificial turf 5 Penetration suppression member 6 Thin cotton sheet 7 Net 8 Fertilizer bag 9 Storage part

Claims (5)

A vegetation mat in which artificial turf, which is formed in a net shape and has a space where the target species can grow in a plan view, is laminated above the vegetation portion containing the seeds of the target species. The vegetation mat according to claim 1, wherein the artificial turf mesh is installed on a slope so as to have an oblique portion extending in an oblique direction with respect to a contour line in a plan view. The vegetation mat according to claim 1 or 2, further comprising a penetration suppressing member capable of penetrating the germination of the target species and suppressing germination penetration of a buried seed of a competing species having a wider leaf width than the target species. The vegetation mat according to any one of claims 1 to 3, which has flexibility as a whole and can be wound into a roll. Above the vegetation part with the seeds of the target species, an artificial turf formed in a net pattern and having a space where the target species can grow in a plan view is laminated, and the target species is at least Tall fescue or Bermudagrass. Vegetation mat including one.

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