Weeding board for seedlings

Abstract

To provide a weeding board for seedlings which prevents the growth of weeds or brush around seedlings such as trees for a prescribed period of time and thereafter gradually decomposes and is returned to the soil harmlessly. [Solution] The weeding board for seedlings 1 is made of a board material made from plants, and has a through hole 2 formed in the center through which the root part of a seedling 6 is inserted, and a slit 3 connecting this through hole 2 to the outer edge. The weeding board for seedlings 1 is impregnated with vegetable oil inside, and is placed around planted seedlings 6 to prevent the growth of weeds.

Description

[Technical field]

[0001] This invention relates to a weeding board for seedlings that is laid around planted seedlings to prevent weeds and the growth of weeds for a specified period of time. [Background technology]

[0002] When tree seedlings are planted in mountainous areas, as the seedlings grow, weeds and brush grow around them, which overgrow and significantly impede the growth of the seedlings. For this reason, it is necessary to remove the weeds and brush around the seedlings. Generally, underbrush cutting is done about twice a year, but because the growth of weeds and brush is equal to or faster than that of the seedlings, it is difficult to distinguish between the seedlings and weeds and brush during underbrush cutting, and there is a problem of cutting the seedlings by mistake. In addition, underbrush cutting in mountainous areas is hard work, and the work of cutting underbrush to protect the seedlings is hard work that requires a lot of time and effort. Coupled with the current lack of availability of such work, there was a desire to reduce the labor required for this work.

[0003] In order to solve such problems, a weed removal board for afforestation and cultivation or a weeding board that is laid around seedlings to suppress the growth of weeds has been developed and put to practical use. For example, Japanese Utility Model Application Publication No. 1-94031 (Patent Document 1) discloses that a synthetic resin film having a light-shielding property formed in a square shape is covered around the base of a plant and fixed with a fixed stake to prevent the seedlings from being cut down together with the weeds. Japanese Utility Model Application Publication No. 55-106068 (Patent Document 2) discloses a weeding board for seedlings in which a fibrous material is attached to the back surface of an iron plate or iron foil having a seedling through hole in the center, which exerts a weeding function and can be rapidly corroded and disintegrated and returned to the soil when weeding is no longer necessary. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 1-94031 [Patent Document 2] Japanese Utility Model Application Publication No. 55-106068 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0005] The plant cover sheet shown in Patent Document 1 covers the base of a plant with a synthetic resin film with light-blocking properties to prevent weeds from growing around the seedlings, but because this plant cover sheet is made of synthetic resin film, it remains even after the seedlings have grown and the cover sheet is no longer necessary, necessitating removal work, which requires a lot of time and effort. In addition, the plant cover sheet is made of synthetic resin film, which goes against the realization of a carbon-free society, and there is also the problem that if the cover sheet is left unattended, it could develop into an environmental problem.

[0006] Also, the weeding board for seedlings shown in Patent Document 2 is made of iron plate or iron foil, and a fibrous material is attached to it to suppress the progress of corrosion and decay, so that it is returned to the soil. However, the corrosion and decay of iron changes significantly depending on the chemical components of the land where the trees are planted, and it does not necessarily match the growth of the seedlings, so the desired weeding function may not be achieved. Moreover, iron weeding boards are heavy, and there is also the problem that it is difficult to transport them to the planting site in the mountains by labor.

[0007] To provide a weeding board for seedlings which can prevent the growth of weeds or brush around seedlings of trees or the like for a specified period of time, and thereafter can be gradually decomposed and returned to the soil in an environmentally harmless manner. [Means for solving the problem]

[0008] In order to solve the above problems, the weeding board for seedlings according to the present invention is a weeding board for seedlings that is laid around planted seedlings to prevent the growth of weeds, the weeding board for seedlings is formed from a board material made of plants, the weeding board for seedlings has a hole formed in the center through which the base part of the seedling is inserted, and a slit connecting this hole to the outer edge is formed, and the weeding board for seedlings is impregnated with vegetable oil inside.

[0009] In addition, the plant-based weeding board for seedlings is selected from at least one type of board material selected from oil-permeable board-shaped wood such as plywood, solid plywood, composite panel, and log slices, and thick paper such as paperboard, cardboard, and corrugated cardboard.

[0010] Furthermore, the seedling weeding board is fixed by a fastener that penetrates the outer periphery, and the fastener is made of wood or bamboo. Effect of the Invention

[0011] According to the weeding board for seedlings of the present invention, the weeding board for seedlings is made of a plate material made of plants and is impregnated with vegetable oil, so that the impregnated vegetable oil suppresses the deterioration of the weeding board for 2 to 3 years until the seedlings grow and can be distinguished from weeds and other trees, and prevents the growth of weeds or other trees in the surrounding area. In addition, when the seedlings grow to adulthood, the weeding board can be gradually decomposed and returned to the soil. In this case, since the weeding board for seedlings is made of a plate material made of plants, it can be returned in a harmless state to the environment. Moreover, since it is impregnated with vegetable oil, there is no risk of any adverse effect if it adheres to the seedlings. Furthermore, since the weeding board for seedlings is made of a plate material made of plants, it is lightweight, so that it can be easily transported to the mountains where reforestation is carried out and laid down.

[0012] In addition, the weeding board for seedlings can be made of any readily available material that is permeable to vegetable oil, such as plywood, solid wood plywood, composite panel, log slices, or thick paper such as paperboard, cardboard, or corrugated cardboard. Moreover, these weeding boards for seedlings can be made of one type of material or can be made of a combination of two or more types of materials to adjust the time until deterioration.

[0013] Furthermore, by forming the fasteners that secure the outer periphery of the seedling weeding board from plants made of wood or bamboo, when the seedling weeding board deteriorates, the fasteners also deteriorate and can be returned to the soil, thereby preventing adverse effects on the environment. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing an embodiment of a weeding board for seedlings according to the present invention. [Diagram 2] 1(A) and (B) are perspective views showing the state in which a weeding board for seedlings is impregnated with vegetable oil. [Diagram 3] 13(A) and (B) are perspective views showing a fixing device for fixing a weeding board for seedlings. [Diagram 3] 13(A) and 13(B) are perspective views showing an example of a weeding board for seedlings made of wood. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The weeding board for seedlings according to the present invention is a weeding board that is laid around planted seedlings to prevent the growth of weeds. The weeding board for seedlings is made of a board material made of plants, and has a hole formed in the center through which the base of the seedling can be inserted, and slits connecting this hole to the outer edge. The weeding board for seedlings is impregnated with vegetable oil inside.

[0016] A preferred embodiment of the present invention will be described below with reference to the drawings. Fig. 1 shows an embodiment of a weeding board for seedlings according to the present invention. The weeding board for seedlings 1 is formed of a plate material made of corrugated cardboard made of plant material. The weeding board for seedlings 1 is formed in a rectangular shape, and a through hole 2 is formed in the center for inserting the root part of a seedling 6, and a slit 3 is formed to connect the through hole 2 to the outer edge. The slit 3 is formed so that the seedling 6 can be introduced near the root to the through hole 2 through the slit 3 after planting the seedling 6.

[0017] The size of the weeding board 1 for seedlings is set appropriately depending on the type and size of the seedlings 6, but the length of one side is generally set to 30 cm to 1.8 m. The thickness of the board is set appropriately depending on the soil or environment of the planting site, but is preferably about 3 mm to 30 mm. When a corrugated board is selected as the weeding board 1 for seedlings in this way, if the board thickness is to be increased, a weeding board 1 for seedlings of the desired thickness can be obtained by stacking multiple corrugated boards, which generally have a thickness of about 3 mm. If the weeding board 1 for seedlings requires even greater strength, a reinforced corrugated board may be used, and if the weeding board is to be used in a place with a high moisture content, a water-resistant corrugated board may be used.

[0018] Meanwhile, the seedling weeding board 1 is impregnated with vegetable oil. The vegetable oil is oil extracted from plants, such as rapeseed oil, rice oil, olive oil, and sesame oil. These vegetable oils are usually used as tempura oil, so it is possible to impregnate the plate with used waste oil. Even if the impregnated vegetable oil leaks from the seedling weeding board 1, since it is derived from plants, it can be returned to nature without causing any adverse effects on the environment. Mineral oil is not used, however, as it may have an adverse effect on the seedlings 6 or surrounding plants.

[0019] FIG. 2 illustrates a means for impregnating the corrugated board of the seedling weeding board 1 with vegetable oil. The corrugated board 4 is available in the form of a plate or roll. FIG. 2(A) illustrates a method for impregnating the corrugated board in the form of a roll with vegetable oil. The corrugated board in the form of a roll is a long corrugated board rolled into a roll, and the core is exposed between the two liners at the end surface. Since the core is formed to be hollow, the vegetable oil can be injected into the hollow to impregnate the inside. That is, as shown in FIG. 2(A), by injecting vegetable oil 5 evenly over the entire end surface from one end surface of the rolled corrugated board, the vegetable oil 5 falls to the other end surface, and the vegetable oil 4 is impregnated into the inside. If the vegetable oil 5 is to be impregnated so as to be spread throughout the entire surface, it is sufficient to leave the vegetable oil 4 for several hours to several days after injecting the vegetable oil 4. FIG. 2(B) illustrates a method for impregnating the corrugated board in the form of a plate with vegetable oil 5. As shown in the figure, the corrugated board can be impregnated by stacking multiple sheets and injecting vegetable oil 5 into the hollow space of the exposed core. In this case, too, if the vegetable oil 5 is to be impregnated so that it is absorbed throughout the board, it is sufficient to leave the board for several hours to several days after injecting the vegetable oil 5. Another method for impregnating the board with vegetable oil 5 is to directly immerse the seedling weeding board 1 in the vegetable oil 5.

[0020] FIG. 3 shows fasteners 7, 8 for fixing the seedling weeding board 1 to soil or the like. The fastener 7 shown in FIG. 3(A) is made of bamboo material. A flange 7a is formed at the upper end of the fastener 7 so as to protrude to the left and right, and a lower end 7b is formed in the shape of an acute nail. When the fastener 7 is laid around the planted seedlings 6, the lower end 7b of the fastener 7 is driven into four places on the outer periphery of the seedling weeding board 1 to fix the seedling weeding board 1. The flange 7a at the upper end presses the seedling weeding board 1 to prevent it from scattering.

[0021] The fixture 8 shown in Fig. 3(B) is made of wood, and as an example, it is made of a tree branch. This fixture 8 is made by cutting a branch with a diameter of about several centimeters so that a twig 8a protrudes on one side, forming a flange 8a, and the lower end 8b is formed into an acute nail shape. The flange 8a at the upper end prevents the seedling weeding board 1 from scattering. The fixture 8 made of wood may be made of wood in addition to tree branches, and may be formed into a structure similar to that of the fixture 7 made of bamboo described above.

[0022] Figure 4 shows an example of using a wooden board as a weeding board for seedlings. Figure 4(A) shows a round-cut weeding board 11 made by cutting a log of a tree into round slices, and a log with a diameter of several tens of centimeters is cut into round slices with a thickness of 3 cm to 10 cm. As in the above example, the round-cut weeding board 11 also has a through hole 11a in the center for inserting the root part of the seedling 6, and a slit 11b is formed to connect this through hole 11a to the outer edge. Furthermore, the round-cut weeding board 11 is impregnated with vegetable oil.

[0023] FIG. 4(B) shows a wooden weeding board 12 formed of a flat board of wood made of plywood, solid wood plywood, or composite panel as a weeding board for seedlings using a wooden board. As in the above-mentioned example, this wooden weeding board 12 also has a through hole 12a in the center for inserting the root part of the seedling 6, and a slit 12b is formed to connect the through hole 12a to the outer edge. Furthermore, the wooden weeding board 12 is impregnated with vegetable oil. The wooden weeding board 12 shown in FIG. 4(B) is formed in a disk shape. The planar shape of the wooden weeding board 12 may be formed into any suitable shape such as a square, a diamond, or an ellipse.

[0024] The above-mentioned corrugated board or wood weeding board for seedlings is laid down by inserting a slit into the base of the seedling after planting the seedling and fixing it to the central through hole. The vegetable oil impregnated inside the weeding board for seedlings has the effect of suppressing deterioration or decay of the weeding board for seedlings, and the function of the weeding board is maintained for 2 to 3 years until the seedlings grow and can be distinguished from weeds or miscellaneous trees. After that, it gradually decomposes and is eventually returned to the soil. Since this weeding board is made of a board material made of plants, it is returned in a harmless state to the environment. In addition, the fixing device for fixing the weeding board for seedlings is also made of wood or bamboo, so that it gradually decomposes after 2 to 3 years like the weeding board for seedlings and is eventually returned to the soil, but since it is made of plants, it is returned in a harmless state to the environment.

[0025] The present invention has been described above based on the embodiments, but the present invention is not limited to the above embodiments and can be modified in various ways without departing from the spirit of the invention. For example, the seedling weeding board may be formed into a generally conical shape with a higher central portion. In addition, although the example has been given of using one seedling weeding board for one seedling, a seedling weeding board formed over a large area may be formed with holes and slits at predetermined intervals to place multiple seedlings on it. Furthermore, seedling weeding boards placed on adjacent seedlings may be connected to each other. [Explanation of symbols]

[0026] 1 Weeding board for seedlings 2 Through hole 3 Slit 4. Corrugated cardboard 5 vegetable oil 6 Seedlings 7 Fixtures

Claims

1. A weeding board for seedlings that is laid around planted seedlings to prevent the growth of weeds, The seedling weeding board is formed from a board material made of a plant, The seedling weeding board has a through hole formed in the center through which the root part of the seedling is inserted, and a slit that connects the through hole to the outer edge, The weeding board for seedlings is impregnated with vegetable oil inside.

2. The weeding board for seedlings according to claim 1, wherein the weeding board for seedlings is made of at least one type of board material selected from the group consisting of plank-shaped wood such as plywood, solid plywood, composite panel, and log slices that are permeable to vegetable oil, and thick paper such as paperboard, cardboard, and corrugated cardboard.

3. 2. The weeding board for seedlings according to claim 1, wherein the weeding board for seedlings is fixed by a fastener penetrating the outer periphery, the fastener being made of wood or bamboo.

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