JP2022072417A - Plant underground stem control structure - Google Patents

Abstract

To provide a plant underground stem control structure 10 capable of preventing an underground stem 41 of a plant 4 such as a bamboo and a bamboo grass from entering, and efficiently preventing growth of a sprout 42 generated from the underground stem 41 to suppress extension itself of the underground stem 41 in the periphery of a boundary B.SOLUTION: A plant underground stem control structure 10 includes: an embedded part 1 formed by embedding a band-shape first sheet 11 in the ground G by a predetermined depth D along a boundary B; and a laid part 2 formed by laying a band-shape second sheet 21 connected to the first sheet 11 without any clearance, in the ground surface S by a predetermined width W from the first sheet 11 to a plant 4.SELECTED DRAWING: Figure 1

Description

The present invention relates to a rhizome control structure of a plant, more specifically, a rhizome control structure of a plant that prevents the invasion of the rhizome of a plant such as bamboo or bamboo and suppresses the elongation of the rhizome.

It is not uncommon for bamboos and bamboo grasses that propagate by extending their rhizomes to drive out other plants due to their strong fertility, and to change thickets to bamboo forests and bamboo bushes in a few years. Bamboo shoots in particular have a high growth rate, and depending on the environment, bamboo shoots may grow 1 m or more per day, and rhizomes may grow 5 m or more per year.

As is well known, there has been a problem that the rhizomes of bamboos and the like, which are rich in fertility, invade the neighboring land beyond the border and sprout (bamboo shoots) are generated there, which causes troubles. In addition, even if the rhizome does not invade the neighboring land, the parent bamboo (bamboo culm) that has grown on the border of the ground tilts toward the neighboring land, and the upper part of the parent bamboo protrudes greatly to the neighboring land, for example, in the neighboring land. There was also the problem of causing traffic obstacles on the road.

To date, measures have been proposed to bury a partition plate in the ground along the boundary to a predetermined depth in order to prevent the invasion of rhizomes of plants such as bamboo and bamboo grass (for example, Patent Documents 1 and 2). etc). Further, a flexible partition sheet is embedded in the ground along the boundary to a predetermined depth in a curtain shape.

However, although these conventional measures can block the invasion of rhizomes with partition plates and sheets, they cannot suppress the elongation of the rhizomes themselves, and are effective for problems such as the parent bamboo sticking out to the adjacent land. There was a difficulty that could not be dealt with.

Jitsukaisho 61-15947 Gazette Japanese Unexamined Patent Publication No. 2005-21101

The present invention has been made in view of the above-mentioned difficulties in the conventional measures, and it prevents the invasion of the rhizomes of plants such as bamboo and bamboo grass, and the growth of sprouts generated from the rhizomes. It is an object of the present invention to provide a rhizome control structure of a plant that can prevent the rhizome from growing and suppress the elongation of the rhizome itself around the boundary.

In the present invention, a strip-shaped first sheet is buried in the ground in a curtain shape to a predetermined depth along a boundary to prevent the invasion of the rhizome of a plant, and the first sheet is connected to the first sheet without a gap. A strip-shaped second sheet is provided with a laying portion formed by laying a strip-shaped second sheet on the ground surface by a predetermined width from the first sheet toward the plant side.
The first sheet of the buried portion prevents the invasion of the rhizome, and the extension direction of the rhizome is guided along the first sheet to determine the position of sprout generation from the rhizome at the first sheet of the laid portion. It is characterized by concentrating on the laying range of the two sheets and preventing the growth of the shoots by the second sheet.

Further, the present invention is characterized in that the second sheet of the laying portion has water permeability.

Further, the present invention is characterized in that the first sheet of the buried portion and the second sheet of the laid portion are integrally formed.

According to the rhizome control structure of a plant according to the present invention, the first sheet of the buried portion not only prevents the invasion of the rhizome of the plant, but also guides the extension direction of the rhizome toward the direction along the first sheet from the rhizome. The position of sprout generation is concentrated in the laying area of the second sheet of the laying part, and the growth of each sprout that is concentrated in the laying area of this second sheet can be prevented by the second sheet, so that the second sheet is laid. In the range, the elongation of the rhizome itself can be suppressed, and thus the reproduction of plants can be suppressed.

It is sectional drawing of the rhizome control structure of the plant of this embodiment. It is a top view of the rhizome control structure of the plant of this embodiment. It is a perspective view of the sheet body used for the rhizome control structure of the plant of this embodiment.

As shown in FIGS. 1 and 2, in the rhizome control structure 10 of the plant of the present embodiment, the buried portion 1 formed by burying the strip-shaped first sheet 11 in the underground G and the first sheet of the buried portion 1. It is composed of a laying portion 2 formed by laying a strip-shaped second sheet 21 connected to 11 on the ground surface S. In the present embodiment, bamboos will be described as an example of the plant 4 that propagates by extending the rhizome.

The buried portion 1 is configured by burying a strip-shaped first sheet 11 in an underground G to a predetermined depth D in a curtain shape along a boundary B appropriately set to prevent the invasion of the rhizome 41 of the plant 4. Has been done. The burying of the first sheet 11 can be performed by digging a groove of a required depth in advance along the boundary B, applying the first sheet 11 to the inner wall surface of the groove, and then backfilling the earth and sand in the groove. .. In FIG. 1, the one indicated by reference numeral 43 is a parent bamboo (bamboo culm).

In the present embodiment, as the first sheet 11, a flexible, high-strength, water-permeable polyester non-woven fabric having a thickness of about 1.4 mm is used, and this is embedded in the underground G to a depth of about 1 m. The burial depth D of the first sheet 11 can be appropriately changed depending on the type of plant extending the rhizome, the environment, and the like.

Further, in the present embodiment, as shown in FIG. 2, the first sheet 11 is embedded in a straight line in a plan view along the boundary B set linearly in a plan view, but the flexibility of the first sheet 11 is formed. It is also possible to embed the first sheet 11 in a curved shape in a plan view along the boundary B set in a curved shape, for example.

Further, in the present embodiment, the first sheet 11 is buried at a position separated from the boundary B by a required interval for digging a buried groove of the first sheet 11 along the boundary B, depending on the situation. For example, the first sheet 11 may be embedded on the boundary B in a plan view. This boundary B is appropriately set in order to prevent the invasion of the rhizome of the plant, and does not necessarily have to be the registered writing boundary or the ownership boundary that defines the scope of the land ownership.

The laying portion 2 is configured by laying a strip-shaped second sheet 21 on the ground surface S by a predetermined width W from the burial position of the first sheet 11 toward the plant 4 side. One side edge of the second sheet 21 in the longitudinal direction is connected to the upper edge of the first sheet 11 without a gap, and the second sheet 21 is connected to a plurality of fastening means (not shown) such as anchor pins. It is fixed to the ground surface S and laid.

In the present embodiment, as the second sheet 21, a polyester non-woven fabric having a thickness of about 1.4 mm, which is flexible, has high strength, and has water permeability, is used as the first sheet 11, and as shown in FIG. 3, the first sheet is used. A sheet body 3 in which the sheet 11 and the second sheet 21 are continuously integrally formed is used. The sheet body 3 can be rolled by utilizing its flexibility, and is excellent in portability and handleability. Reference numeral 31 in FIG. 3 indicates a virtual connection line between the first sheet 11 and the second sheet 21. By attaching a visible mark on the virtual connection line 31, it can be used as a guide for construction.

Further, in the present embodiment, the second sheet 21 is laid on the ground surface S with a width of about 1 m from the buried position of the first sheet 11 toward the plant 4 side. The laying width W of the second sheet 21 can be appropriately changed according to the type of plant for extending the rhizome, the environment, and the like.

By providing the rhizome control structure 10 of the plant of the present embodiment along the boundary B in this way, as shown in FIG. 1, the invasion of the rhizome 41 of the plant 4 such as bamboo is blocked by the first sheet 11 of the buried portion 1. At the same time, the growth of the sprout 42 is prevented by pressing the top of the sprout 42 generated from the rhizome 41 with the second sheet 21 of the laying portion 2.

As described above, according to the rhizome control structure 10 of the plant of the present embodiment, not only the first sheet 11 of the buried portion 1 prevents the rhizome 41 of the plant 4 from invading, but also the extension direction of the rhizome 41 is set to the first sheet 11. The growth of each sprout 42 that was concentrated in the laying range of the second sheet 21 of the laying portion 2 was concentrated in the laying range of the second sheet 21 of the laying portion 2 by guiding the sprout 42 from the rhizome 41 in the direction along the line. Can be prevented by the second sheet 21. As a result, in the laying range of the second sheet 21, the elongation of the rhizome 41 itself can be suppressed, and by extension, the reproduction of the plant 4 can be suppressed.

If a conventionally known weed-proof sheet is used to prevent the growth of all shoots 42 generated on the ground surface S, the growth of the rhizome 41 can be suppressed more effectively and the growth of the plant 4 can be suppressed. Can be done. However, it is practically impossible to predict the position of the sprout 42 on the ground surface S where the plant 4 is vegetated, and there is no choice but to lay a weed-proof sheet over the entire surface of the ground surface S without any gaps. Not only is this uneconomical due to the high installation cost, but especially when the weed-proof sheet used is impermeable, the water content of the underground G changes significantly over a wide range, resulting in a large change in the underground environment. There is a great influence on the economy, and sometimes there is even a danger of causing landslides.

According to the rhizome control structure 10 of the plant of the present embodiment, the property of the plant 4 that bypasses the rhizome 41 along the first sheet 11 of the buried portion 1 is positively utilized, and the property is concentrated along the first sheet 11. Since the growth of the sprout 42 generated in the plant can be prevented by the band-shaped second sheet 21 of the laying portion 2, the elongation of the rhizome 41 can be suppressed more efficiently, the reproduction of the plant 4 can be suppressed, and the growth of the plant 4 can be suppressed. The impact on the environment after construction can also be reduced.

Further, in the rhizome control structure 10 of the plant of the present embodiment, since the second sheet 21 of the laying portion 2 has water permeability, the water content of the underground G before and after the laying is also in the laying range of the second sheet 21. Changes in quantity can be minimized and the impact on the environment can be reduced.

Further, since the rhizome control structure 10 of the plant of the present embodiment uses a sheet body 3 in which the first sheet 11 of the buried portion 1 and the second sheet 21 of the laid portion 2 are continuously integrally formed. Excellent on-site workability.

Although the rhizome control structure 10 of the plant of the present embodiment has been described above, the present invention can also be carried out in other embodiments.

For example, in the above embodiment, the first sheet 11 of the buried portion 1 and the second sheet 21 of the laid portion 2 are integrally formed, but the present invention is not limited to this, and it is buried at the time of on-site construction. The first sheet 11 of the part 1 and the second sheet 21 of the laying part 2 may be connected.

Further, the first sheet 11 and the second sheet 21 do not necessarily have to be made of the same material, and the materials may be different. The first sheet 11 of the buried portion 1 is sufficient as long as it has the flexibility to be freely buried along the boundary B and the strength to prevent the rhizome 41 from penetrating in the underground G. The material can be adopted. Further, the second sheet 21 of the laying portion 2 has flexibility that can be freely laid according to the undulations of the ground surface S, and holds the top of the sprout 42 in a state of being fixed to the ground surface S by an anchor pin or the like. It suffices if it has enough strength to prevent the shoot 42 from growing upward, and various materials can be adopted. The second sheet 21 does not necessarily have a light-shielding property, and a net-like sheet having a large number of small holes may be adopted. Further, as the first sheet 11 and the second sheet 21, in addition to the non-woven fabric, a woven or knitted fabric or a film material may be used, or a composite sheet material in which a plurality of layers of different materials are laminated may be used. ..

The present invention can be carried out in a mode in which various improvements, modifications, and modifications are added based on the knowledge of those skilled in the art, without departing from the spirit of the present invention. Further, any invention-specific item may be replaced with another technique within the range in which the same action or effect is produced, or the invention-specific item integrally configured may be composed of a plurality of members. Alternatively, the invention-specific matters composed of a plurality of members may be carried out in a form integrally configured.

10 Rhizome control structure of plants 1 Buried part 11 First sheet 2 Laying part 21 Second sheet 3 Sheet body 4 Plant 41 Rhizome 42 Sprout B Boundary G Underground S Ground surface D (buried first sheet) Depth W (second) Sheet laying) Width

Claims (3)

A buried part consisting of a band-shaped first sheet buried in the ground in a curtain shape to a predetermined depth along the boundary where the invasion of the rhizome of the plant should be prevented.
A laying portion formed by laying a strip-shaped second sheet connected to the first sheet on the ground surface by a predetermined width from the first sheet toward the plant side.
Equipped with
The first sheet of the buried portion prevents the invasion of the rhizome, and the extension direction of the rhizome is guided along the first sheet to determine the position of sprout generation from the rhizome at the first sheet of the laid portion. A rhizome control structure of a plant characterized by concentrating on the laying range of two sheets and preventing the growth of the sprout by the second sheet. The rhizome control structure for a plant according to claim 1, wherein the second sheet of the laying portion has water permeability. The rhizome control structure for a plant according to claim 1 or 2, wherein the first sheet of the buried portion and the second sheet of the laid portion are integrally formed.

Images