JPH057490B2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention organically combines grasses that have strong growth potential and are suitable for short-term greening, and trees and wildflowers that can withstand poor soil and restore mountains. This invention relates to the invention of a slope greening method that can reliably achieve permanent greening.

(Conventional techniques and their problems) Recently, various government agencies such as the Ministry of Construction, the Ministry of Agriculture and Forestry, the Highway Public Corporation, and the civil engineering departments of each prefecture have been using conventional pasture grass as the ultimate goal of greening is to restore the slope to its original state. One suggestion has been made regarding greening only.

However, since the commonly used slope greening method involves spraying a mixture of grass, wildflowers, and tree seeds, the grass's growth potential overwhelms the slow-germinating and slow-growing wildflowers and trees. The wild grasses and trees that were sown could no longer grow, leaving only grass as greenery.Furthermore, since grass only grows for a few years, the greening would be short-term and the final goal of restoring the mountain would not be achieved. do not have.

On the other hand, attempts to prevent pressure on pastures and encourage the growth of trees and wildflowers are old, and were proposed in Special Publication No. 25247-1973.

This method is a method of growing grass, wildflowers, and trees separately in contour lines, and is extremely excellent from a technical perspective. Since the seeds were sown by digging, it was inefficient and uneconomical, and also had the disadvantage that the seeds were washed away by rainfall.

The present inventors have undertaken research on a labor-saving and economical slope greening method that allows for permanent greening, and has completely prevented the washing away of vegetation bags containing grass seeds, allowing them to receive pressure from grass. We have found a method that allows wildflowers and trees to grow reliably without any problems, and have completed the present invention.

[Means for solving problems] The details of the present invention will be explained below based on examples.

The vertically long net 1 of the present invention may be made of any plant-based, chemical, or metallic material as long as it adapts to the undulations of the slope and has sufficient strength to prevent soil and sand. Chemical nets such as nylon and polyethylene are most suitable.

Next, I will explain about the fertilizer bag 3 and the vegetation bag 2 that are attached to the net.The fertilizer bag has a bag body made of insoluble non-woven fabric that has a thickness and air permeability that allow fertilizer nutrients to gradually seep out due to rainfall. It is effective to use a mixture of three types of fertilizers, fast-release, slow-release, and slow-release, so that the effect lasts continuously for about 1 to 5 years. If an improving material is also used, the decomposition of fertilizer nutrients can be further extended over a long period of time.

Regarding vegetation bags, the materials that make up the bag are made of polymeric film or starch film that dissolves in water so as not to hinder the germination and growth of vegetation. Ltd.), and the bag is filled with only grass seeds, water retaining material, and some fertilizer.

The above fertilizer bag and vegetation bag are attached to the net at appropriate intervals, but in this case, when looking at the same attachment part when the net is stretched on a slope, the vegetation bag is positioned above the fertilizer bag. By sequentially repeating this mounting state, a vegetation net including a large number of vegetation bags and fertilizer bags is completed.

Vegetation bags and fertilizer bags can be attached by simply tying them to nets at intervals of 20 to 60 cm using vinyl-coated iron wire 6 or strings, or by attaching them to nets at intervals of 20 to 60 cm as shown in Figure 2. Sometimes a method is used in which the bag is passed vertically in the lateral direction and the ends of the bag are secured with staples or the like. There are various other methods, and the method is not limited to the above two methods.

This vegetation net is usually 1 to 2 meters wide,
It is long, 10 to 30 meters long, and is equipped with a number of vegetation bags and fertilizer bags, and is packaged in a roll.

The vegetation net used in the present invention is suspended from the upper part of the slope and set up with anchor pins 4, pegs, etc.;
The difference is whether the vegetation bag or fertilizer bag is placed on the top side of the net or adjusted by placing it on the bottom side.When spreading seeds in a thick layer, place the vegetation bag or fertilizer bag on the bottom side of the net and spread in a thin layer. When sowing seeds, place vegetation bags and fertilizer bags on the top of the net. In this case, the vegetation bag must be placed above the fertilizer bag.

Once the setting is complete, the seeds can be wildflower seeds such as mugwort, Japanese pampas grass, and Japanese itadori, tree seeds such as Japanese grasshopper, Yamahagi, Komatsunagi, red pine, and palm yabushi, and sometimes flower seeds. , fiber, organic compost, fertilizer, and soil conditioner, and the mixed vegetation base material 5 is spread and sown using a power sprayer to complete the construction.

(Function) In the present invention, to prevent erosion on the slope in the initial stage, the grass put in the vegetation bag is protected by growing in stripes because it grows quickly, and other nets include wild grass, grass, etc.
Since the trees are sown, they grow gradually without being pressured by grass.

In addition, since the vegetation bag is made of water-soluble paper, etc., even if it dissolves due to rainfall, there is no risk that the vegetation base material will be washed away downward by the fertilizer bag located at the bottom. The overpressure caused by grass seeds flowing downward and getting mixed with the sowing area of wild grass seeds, tree seeds, or flower seeds can be completely prevented.

(Effects of the Invention) As described above, the present invention provides a vertically long net.
A vegetation bag filled with only wildflower seeds inside the bag and a fertilizer bag filled with fertilizer inside the bag are placed in the same mounting part, and when the net is stretched on a slope, the same mounting part is used. In this case, the vegetation bag is installed so that it is positioned above the fertilizer bag, and by repeating this installation state one after another, a vegetation net with a large number of vegetation bags and fertilizer bags attached is hung from the top of the slope and stretched.
After the installation is completed, the seeds can be wildflower seeds, tree seeds,
It is a greening method that ensures permanent greening by spreading and sowing a vegetation base material containing one or more types of flower seeds using a power sprayer, so it completely separates grass from wildflowers, trees, or flowers. It has now become possible to grow them.

Furthermore, even slow-growing wildflowers, trees, or flowers grow smoothly without being pressured by grass, and the grass prevents slopes from forming in the early stages, so it is possible to reliably restore slopes to mountains.

Furthermore, since the process is as simple as hanging a long vegetation net from the top of the slope and spraying the seeds with a powered sprayer, there is no need to cut grooves as in conventional construction methods. It also has an extremely labor-saving effect.

[Brief explanation of the drawing]

1 and 2 are partial front views showing embodiments of the vegetation net used in the present invention. FIG. 3 is a partial sectional view showing a construction example of the present invention in which a thick layer of vegetation base material is sprayed. FIG. 4 is a partial sectional view showing a construction example of the present invention in which a thin layer of vegetation base material is sprayed. In the figure, 1 is a net, 2 is a vegetation bag, 3 is a fertilizer bag, and 4 is a net.
5 is an anchor pin, 5 is a vegetation base material, 6 is a vinyl-coated iron wire, and 20 is a slope.

Claims (1)

[Claims] 1 In a vertically long net, a vegetation bag filled with grass seeds only and a fertilizer bag filled with fertilizer are attached to the same attachment part, and the net is stretched on a slope. When installing, the vegetation bag is installed so that it is located above the fertilizer bag when viewed from the same installation part, and by repeating this installation state sequentially, the vegetation net with a large number of vegetation bags and fertilizer bags installed is placed on the top of the slope. Permanent greening characterized by spreading the tree in a more drooping manner and, after completing the setting, scattering and sowing a vegetation base material containing one or more of wildflower seeds, tree seeds, and flower seeds using a power sprayer. A greening method that can reliably measure