JPS6078527A - Extermination method and net of winder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling plants that grow with long stems, such as reeds, and a net that can be used directly to carry out the method.

For example, reeds propagate by spreading underground rhizomes, so they grow in groups over a relatively wide area. If such reeds grow on a riverbank or the like where revetment blocks have been constructed, the revetment blocks may rise from the top due to the growth of the underground rhizomes of the reeds, which may threaten the safety of the river. Additionally, if reeds grow below the water surface of a river, it may prevent the water from flowing smoothly, leading to a decline in water quality and the emergence of pests. Under these circumstances, the reeds that have grown are usually removed by manual felling, but this work is not only tedious and requires a great deal of time and effort, but also leaves the reeds on the riverbanks and under water. It is also dangerous to cut down the reeds that have grown from the trees. Therefore, a method of using herbicides may be considered, but this method
Depending on the type of herbicide, it may be accompanied by secondary harm, so it is subject to many restrictions in its use, such as regionally, and is not always a preferred method.

The above situation also applies to long-stemmed plants other than reeds.

The present invention has been made in view of the above circumstances, and is a method that can reliably exterminate grown long-stemmed plants such as reeds without using any human power or chemicals, and an extermination device that can be used directly to carry out the method. The purpose is to provide internet.

In order to achieve the above object, the method of the present invention involves growing a long-stemmed plant through the holes of a net, thereby creating a constriction at the base of the long-stemmed plant that is prevented from growing at °C by the hole edge of the net. When a long-stemmed plant receives an external force from wind or water flow, it bends from the constricted part, and the extermination net according to the present invention It is equipped with a large number of holes that are smaller in width or diameter than the stem diameter.

The present invention will be described below with reference to illustrated examples.

FIG. 1 shows a net (1) for exterminating long-stemmed plants according to the present invention.
) shows the state in which reeds, an example of long-stemmed plants, have grown from river banks and embankments, as well as from the water surface. As is clear from the figure, the net (1) is placed over the sloping upper surface of the riverbank (101), the soil surface of the bank (102), and the soil surface of the riverbed (ioa), and is placed on each upper surface. (1
01), (102), and (108) are held stationary by a bank block (201), earth and sand such as cobblestones, gravel, and soil (202), and a large number of snakes (208), etc. There is. In addition, blocks for seawall (2
01) is the IIA slanted upper surface of the riverbank (101), as is well known.
) is generally constructed for the purpose of preventing the collapse of banks, etc. Earth and sand (202) is laid for the purpose of leveling the upper surface of the bank (102), etc. is generally used to prevent the boundary between the sloped soil surface (101) and the riverbed soil surface (108) from being washed away by water flow.
All of these were merely used for arranging the net (1) and also used for °C, and were not specially constructed, laid, or used.

As illustrated in FIG. 2, the above net (1)
A large number of square or rectangular meshes, that is, holes (1
1) is preferably used. Then C1 hole (I
Both the width L1 and the length L2 of I) are set smaller than the diameter of the grown reed stem A1.

In the above, for example, the upper surface of the bank (1
02), the reed captives grown in the net (1
), and when the altar in Figure 4 has grown to a certain extent, the diameter of the stem Al becomes the net (
It is larger than the horizontal width L1 and vertical width L2 of 1) (see FIG. 2). At this time, Figure 5 (a)
As shown well in Figure 2, the base of the reed stem A1 is connected to the net (1
) is in contact with the hole edge a21+ of the hole OB and is prevented from increasing in diameter due to its growth, resulting in a constriction that is smaller in diameter than the diameter of the stem AI in other parts. The constriction A2 created in this way
+CoyoteC The stem A1 becomes weak at this constriction part A2 and is prone to buckling. Therefore, the same figure (a)
When wind pressure acts on the stem A1 as shown by the arrow shown in the figure, the resulting force causes the stem AI to bend at the waist A2 as shown in the figure (b), and it is naturally exterminated. in this case,
If the constriction A2 is withered and rotten, the stem A1 will break due to its own weight or due to extremely weak wind power. Even if the constriction A2 is not withered and rotten, the stem A1 will generally grow 2 to 3 meters long.
The leaves of the reed (A) are also relatively large, as shown in Figure 4, so they are easily bent by the wind. The above is the first
This is to explain the buckling phenomenon of reed (A) grown on the upper surface (102) of the bank shown in the figure, but the reed (A) grown on the sloping upper surface (101) in the same figure is also affected by wind force or its It naturally buckles under its own weight and is exterminated. Moreover, the reeds φ) grown on the upper surface of the river bed (10B) are similarly bent by the force of water flow, wind power, or their own weight, and are naturally exterminated. In addition, although the case where the external force that causes the buckling is caused by wind force, water flow force, or the weight of the reeds has been described above, this external force may be caused by manual force.

Next, the net (1) shown in Figures 1, 4, and 5
is not limited to the one explained in FIG. 2, but only one of the width dimension LH or the vertical width dimension L2 shown in FIG. 2 is smaller than the diameter of the stem A1, and the other is larger than this. -C is also acceptable. Also, as shown in Fig. 8, a punching plate with a large number of circular holes 01) and "C" is also good, but in that case, the diameter of the holes DI
must be set smaller than the diameter of stem AI. Further, examples of the net that can be used include punching metal and a perforated plate having a large number of slit-like long holes whose width is smaller than the diameter of the stem. In addition, since the diameter of a grown reed stem is generally 5 to 10,118 mm, the width or diameter of the hole Qll of the net (1) to create the constriction A2 shown in Fig. 5 (a) is It is required that the size is smaller than that.

Specifically, the appropriate width or diameter of the hole is 8 to 4 m. In other words, if it is smaller than 8 strings, it will be difficult for the reeds in the early stages of growth to pass through the holes Qll, and there is a risk that the entire net (1) will be lifted off the top surface, and if it is larger than 4 strings, the diameter will be about 5#II8. This is because it is difficult to create sufficiently fine constrictions on the reed stems.

In addition, in order to reliably produce the constriction A2 shown in FIG. Since it is required to have rigidity, the net (1) can be made of synthetic resin or metal, and "C" is also made by knitting wire. If the wire is used, it is desirable to use a wire with sufficient rigidity.In addition, considering weather resistance, net (1)
It is preferable to use a material made of synthetic resin such as polyethylene or vinyl chloride as the material C.

In addition, as shown in Figure 1, the sloping upper neck of the river bank (101)
When the bank protection block (201) is constructed in Even in this case, since the net (1) has a large number of holes 01), the underground water is led to the drainage hole through the holes, and by arranging the net (1), The drainage function of the bank protection block (201) is not impaired.

As is clear from the above explanation, according to the method of the present invention,
It becomes possible to reliably exterminate long-stemmed plants such as reeds without entrusting special power.

Further, according to the net according to the present invention, a constriction can be reliably formed at the base of a long stem, so that the above method can be carried out effectively.

[Brief explanation of the drawing]

Figure 1 is a schematic vertical cross-sectional view showing the riverbank where reeds have grown, Figure 2
The figure is a partial plan view of a net according to an embodiment of the present invention, FIG. 3 is a partial plan view of a net according to another embodiment, and FIG. 4 is a partial plan view of a net according to another embodiment.
The enlarged cross-sectional views of the main parts in the figure, and FIGS. (A)...Reed, which is an example of a long-stemmed plant (1)...Net, 01)...Net hole, α?
・Hole edge, (101χ(102,),・(108)・
...Soil surface. Patent applicant Takiron Co., Ltd.

Claims (2)

[Claims] (1) By growing a long-stemmed plant through a hole in a net placed on the soil surface, a constriction is created at the base of the stem of the long-stemmed plant that touches the edge of the hole in the net and prevents its growth. A method for exterminating long-stemmed plants, which comprises applying an external force to the grown long-stemmed plants to bend the constricted portions. (2) A net for exterminating long-stemmed plants, which has a large number of holes smaller in width or diameter than the diameter of the stem of a grown long-stemmed plant.