Weed control sheet

Abstract

To provide a weed control sheet that reduces the cost of agricultural work. Weed control sheets (10, 20) are formed with openings (11, 21) that allow crops (C) to pass through, and pesticides (12, 22) are contained near the openings (11, 21). By passing the crops (C) through the openings (11, 21) of the weed control sheets (10, 20), it is possible to suppress the growth of weeds around the crops (C).

Description

Technical Field

[0001] It relates to a weed control sheet.

Background Art

[0002] Conventionally, a multi-sheet made of thin vinyl has been used to protect crops planted in the fields of the ridges. The multi-sheet of the following patent document is provided with an opening for planting the seedlings of the crop. After the crop is harvested, the operation of peeling the multi-sheet from the ridge is performed. Since the multi-sheet peeled from the ridge lacks durability for reuse, it is usually incinerated after being used only once.

Prior Art Documents

Patent Documents

[0003] Registered Utility Model No. 3058434

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, when covering the ridge with a multi-sheet, since the service life of the multi-sheet is short, as described above, the multi-sheet is discarded every time the crop is harvested, and when planting the next crop, it is necessary to cover the ridge with a new multi-sheet. Since the multi-sheet has to be prepared every time of harvesting, there is a problem that the cost tends to be high.

Means for Solving the Problems

[0005] [[ID=3۸]] The present invention is a weed control sheet in which an opening through which a crop can pass is formed, and the vicinity of the opening contains a pesticide. According to this configuration, by passing a crop through the opening of the weed control sheet, the generation of weeds around the crop can be suppressed. Here, by using a weed control sheet that generally has a longer service life compared to a multi-sheet, the frequency of discarding the sheet can be reduced, so that the cost of farming operations can be reduced. Furthermore, the pesticides contained near the openings in the weed control sheet can suppress adverse effects on crops caused by pests and other pathogens.

[0006] In addition to the above configuration, the following embodiments are preferable. A weed control sheet formed in a strip shape and capable of being rolled up, wherein the openings are multiple and formed at predetermined intervals in the longitudinal direction. In this way, when the furrows in a field are covered with weed control sheets, it becomes possible to plant crops through multiple openings arranged along the length of the sheet. Furthermore, if the weed control sheets are rolled up and collected after harvesting and reused when planting crops again, there is no need to discard and incinerate them each time like with mulch sheets, thus reducing the negative impact on the environment.

[0007] The aforementioned predetermined interval is considered to be an interval suitable for the cultivation of a specific crop. In this way, farmers only need to use weed control sheets designed for the specific crop they plan to cultivate, thus improving the efficiency of their farm work.

[0008] The opening is one in number, and a slit is formed between the edge of the weed control sheet and the opening, allowing the crop to pass through from the edge to the opening. In this way, even when it is not easy to lay the weed control sheet by passing the crops through the openings in the sheet from above the crops, it becomes possible to lay the weed control sheet around the crops by passing the crops through the slits from the edge of the weed control sheet to the openings.

[0009] The weed control sheet comprises a first weed control sheet having a plurality of first openings, and a second weed control sheet covering the area within the first openings and having a second opening, wherein the slit is formed in the second weed control sheet, and the pesticide is contained in the vicinity of the second opening. In this way, the second weed control sheet can suppress the growth of weeds from within the first opening.

[0010] The sheet comprises a sheet body portion having multiple openings and covering the ridges of a field, and an extension portion extending laterally from the sheet body portion and capable of covering the ground between the ridges and adjacent ridges. In this way, when covering the ridges with the main sheet portion of the weed control sheet, the extended portion can cover the ground between adjacent ridges, thus making the process of covering the field with weed control sheets more efficient.

[0011] The aforementioned pesticide contains chili peppers. This approach minimizes adverse effects on the environment and human health compared to using chemical pesticides. [Effects of the Invention]

[0012] This will make it possible to reduce the costs associated with agricultural work. [Brief explanation of the drawing]

[0013] [Figure 1] Plan view showing a weed control sheet for climbing crops according to Embodiment 1. [Figure 2] Plan view showing weed control sheet for medium-sized crops [Figure 3] Plan view showing weed control sheet for small crops [Figure 4] Figure 1 shows the state of a field with a weed control sheet laid out, using cross-section AA and Figure 2 shows cross-section BB. [Figure 5] Perspective view showing the rolling up of weed control sheets after crop harvesting. [Figure 6] Plan view showing a circular weed control sheet of Embodiment 2 [Figure 7] This diagram shows the state in which the opening of the first weed control sheet laid in the field is covered with the second weed control sheet. [Modes for carrying out the invention]

[0014] Embodiment 1 will be described with reference to Figures 1 to 5. FIG. 1 shows a weed control sheet 10 for vine crops such as watermelon, pumpkin, melon, and gourd. FIG. 2 shows a weed control sheet 20 for medium-sized crops such as eggplant, tomato, okra, green pepper, broccoli, cucumber, edamame, pea, and Chinese cabbage. FIG. 3 shows a weed control sheet 30 for small-sized crops such as onion, spinach, and beet. FIG. 4 shows a state where the weed control sheets 10 and 20 are laid on the field F. FIG. 5 shows the winding up of the weed control sheet 10 after the harvest of the crop C.

[0015] As shown in FIGS. 1 to 3, the weed control sheets 10, 20, and 30 are each formed from a sheet material S extending in a strip shape, and a plurality of openings 11, 21, and 31 are formed therethrough at predetermined intervals D1 to D3 in the longitudinal direction.

[0016] For the material of the weed control sheets 10, 20, and 30 (the material of the sheet material S), known materials can be used. For example, it can be made of polyester (PEs), polypropylene (PP), or polyethylene (PE). It can also be a non-woven fabric or a woven fabric. The thickness of the weed control sheets 10, 20, and 30 (sheet material S) is, for example, set to a constant thickness of 0.4 to 4 mm, and the weed control sheets 10, 20, and 30 have flexibility enough to be wound into a roll. Note that the thickness of the weed control sheet is not limited to this and can be changed as appropriate.

[0017] The sheet material S is integrally formed with a sheet main body part S1 and an extension part S2 continuous to the side of the sheet main body part S1 (the boundary between the sheet main body part S1 and the extension part S2 is indicated by a virtual boundary X1). Openings 11, 21, and 31 are formed in the sheet main body part S1, but no openings are formed in the extension part S2. The sheet main body part S1 is laid on the ridges U1 and U2 of the field F, and the extension part S2 is laid on the walking area W between the adjacent ridges U1 and U2 in the field F.

[0018] The weed control sheets 10, 20, and 30 are preferably black, white, or green, but may be other colors. If the weed control sheets 10, 20, and 30 are white, the light reflected from the sheets will hit the leaves of crop C, thereby promoting the growth of crop C.

[0019] Compared to mulch sheets made of vinyl or thin polyethylene, weed control sheets 10, 20, and 30 have a longer service life due to differences in material and thickness. While mulch sheets are not permeable to water but have heat retention and moisture retention properties, weed control sheets 10, 20, and 30 in this embodiment are permeable to water, have heat retention and moisture retention properties. However, weed control sheets 10, 20, and 30 are not limited to these, and may be made without water retention, heat retention and moisture retention properties.

[0020] In this embodiment, the openings 11, 21, and 31 are circular in shape, but are not limited to this and may be elliptical, oblong, or polygonal. The width and length of the weed control sheets 10, 20, and 30, and the size and number of the openings 11, 21, and 31 can be any dimensions.

[0021] In this embodiment, the weed control sheet 10 (Figure 1) is, for example, 1.5 m wide and 25 m or 50 m long, and the diameter of the openings 11 is, for example, 70 mm. Multiple openings 11 are arranged in a row in the middle of the width direction of the weed control sheet 10. The weed control sheets 20 and 30 (Figures 2 and 3) are, for example, 1.5 m wide and 5 m, 10 m, or 25 m long, with openings 21 and 31 having a diameter of 50 mm. The openings 21 are arranged in pairs (or multiple pairs) in the width direction, each in a single row. The openings 31 are arranged in pairs (or multiple pairs) in the width direction, each in a single row. With these dimensions, weed control sheet 10 is suitable for cultivating specific vining crops C such as watermelons, pumpkins, and melons; weed control sheet 20 is suitable for cultivating medium-sized specific crops C such as eggplants, tomatoes, okra, bell peppers, and broccoli; and weed control sheet 30 is smaller than medium-sized specific crops C and is suitable for cultivating specific crops C such as onions, spinach, and beets (see Figure 4).

[0022] The areas near the openings 11, 21, and 31 in the weed control sheets 10, 20, and 30 (in this embodiment, the area between the openings 11, 21, and 31 and the outer edges of the pesticides 12, 22, and 32 shown by dashed lines) are treated with antibacterial and insecticidal agents by containing pesticides 12, 22, and 32. On the other hand, areas further away from the openings 11, 21, and 31 do not contain pesticides. In other words, the sheet material S (weed control sheet) has a pesticide area containing pesticides 12 (22, 32) and a non-pesticide area not containing pesticides 12 (22, 32). The area around the openings 11 (21, 31) is the pesticide area, and areas further away from the openings 11 (21, 31) are the non-pesticide areas. In this embodiment, pesticides 12, 22, and 32 produce an insecticidal effect against pests and contain at least chili peppers. More preferably, the pesticides may contain, for example, Bacillus subtilis or insecticides. Examples of chili peppers that can be used include Carolina Reaper, Trinidad Scorpion Butch Tyler, Bhut Jolokia, and Habanero.

[0023] Furthermore, pesticides 12, 22, and 32 are not limited to those listed above, and may include, for example, fungicides (to protect crops from plant pathogens (filamentous fungi and bacteria)), insecticides (to control insects harmful to crops), herbicides (to control weeds), and plant growth regulators (to enhance or suppress the physiological functions of plants). Pesticides 12, 22, and 32 are not limited to biological pesticides, and chemical pesticides may also be used.

[0024] The pesticides 12, 22, and 32 can be impregnated into the weed control sheets 10, 20, and 30 by known methods, such as applying (adhering) or soaking the liquid, paste, water-soluble, powder, or granular pesticides. Furthermore, the method is not limited to applying the pesticides 12, 22, and 32 to the sheet material S after its manufacture; the pesticides 12, 22, and 32 may be impregnated into the sheet material S during its manufacture.

[0025] The range of pesticides 12, 22, and 32 can be set to a predetermined dimension from the openings 11, 21, and 31. This dimension is set to a suitable dimension depending on the type of crop C. In this embodiment, for weed control sheet 10, it is set to, for example, 3 to 5 cm from the opening 11, and for weed control sheets 20 and 30, it is set to, for example, 2 to 4 cm from the openings 21 and 31, but it is not limited to these, and the dimensions can be set as appropriate.

[0026] Next, we will explain the manufacturing methods for the weed control sheets 10, 20, and 30. Openings 11, 21, and 31 are formed at predetermined intervals D1 to D3 on a strip-shaped sheet material S made of polyester or the like by punching (Figures 1 to 3). Next, pesticides 12, 22, and 32 are applied to the vicinity of each opening 11, 21, and 31 (for example, an annular region including the opening edge) to form weed control sheets 10, 20, and 30.

[0027] Next, we will explain how to use weed control sheets 10 and 20. Since weed control sheet 30 can be used in the same way as weed control sheets 10 and 20, we will omit the explanation of how to use weed control sheet 30.

[0028] As shown in Figure 4, in a field F where multiple ridges U1 and U2 are arranged side by side, ridge U1 is covered with the main sheet portion S1 of the weed control sheet 10, and the walking area W is covered with the extension portion S2 of the weed control sheet 10. In the field F, ridge U2 is covered with the main sheet portion S1 of the weed control sheet 20, and the walking area W is covered with the extension portion S2 of the weed control sheet 20. Next, U-shaped metal fixing pins P are driven into the weed control sheets 10 and 20 at predetermined intervals in the areas covering the slopes of the ridges U1 and U2, thereby fixing the weed control sheets 10 and 20 to the ground. As a result, the weed control sheets 10 and 20 become continuous on the ground in the direction of the rows U1 and U2, and the entire field F (the entire rows U1 and U2 and the walking area W) is covered with weed control sheets 10 and 20.

[0029] Then, as the specific crop C for weed control sheet 10, for example, watermelons are planted at the positions of each opening 11, and as the specific crop C for weed control sheet 20, for example, eggplants are planted at the positions of each opening 21. When it is time to harvest crop C, and after harvesting crop C is complete, the fixing pins P that secure the weed control sheets 10 and 20 are removed. After washing the weed control sheets 10 and 20 with water, as shown in Figure 5, the weed control sheets 10 and 20 are rolled up from the longitudinal end using a rod R or the like. The rolled-up weed control sheets 10 and 20 are then used in the same manner as described above when it is time to plant crop C again.

[0030] According to this embodiment, the following actions and effects are achieved. Weed control sheets 10, 20, 30 are formed with openings 11, 21, 31 that allow crop C to pass through, and the vicinity of the openings 11, 21, 31 contains pesticides 12, 22, 32. According to this embodiment, by passing crop C through the openings 11, 21, and 31 of the weed control sheets 10, 20, and 30, the growth of weeds around crop C can be suppressed. Here, by using weed control sheets 10, 20, and 30, which generally have a longer service life compared to mulch sheets, the frequency of sheet disposal can be reduced, thereby lowering the cost of agricultural work. Furthermore, the pesticides 12, 22, and 32 contained near the openings 11, 21, and 31 of the weed control sheets 10, 20, and 30 can suppress adverse effects on crop C caused by pests and other pathogens.

[0031] Furthermore, the weed control sheets 10, 20, and 30 are formed in a strip shape and can be rolled up, and the openings 11, 21, and 31 are multiple and formed at predetermined intervals D1 to D3 in the longitudinal direction. In this way, when the furrows U1 and U2 of the field are covered with weed control sheets 10, 20, and 30, it becomes possible to plant crop C through multiple openings 11, 21, and 31 arranged in the longitudinal direction. Furthermore, if the weed control sheets 10, 20, and 30 are rolled up and collected after harvesting and reused when planting crop C next time, there is no need to discard and incinerate them each time, thus reducing the negative impact on the environment.

[0032] Furthermore, the predetermined intervals D1 to D3 are considered to be suitable intervals for cultivating specific crop C. In this way, farmers only need to use weed control sheets 10, 20, or 30 designed for the crop C (specific crop) they plan to cultivate, thus improving the efficiency of their farm work.

[0033] Furthermore, it comprises a sheet body S1 having multiple openings 11, 21, and 31 that cover the ridges U1 and U2 of the field, and an extension S2 that extends laterally from the sheet body S1 and is capable of covering the walking area W (ground) between ridge U1 and the adjacent ridge U2. In this way, when covering ridges U1 and U2 with the sheet body S1 of the weed control sheets 10, 20, and 30, the walking area W between adjacent ridges U1 and U2 can be covered with the extension S2, thus making the work of covering the field with the weed control sheets 10, 20, and 30 more efficient.

[0034] Additionally, pesticides 12, 22, and 32 contain chili peppers. This approach minimizes adverse effects on the environment and human health compared to using chemical pesticides.

[0035] Next, Embodiment 2 will be described with reference to Figures 6 and 7. As shown in Figure 6, the weed control sheet 40 (an example of the "second weed control sheet") is formed by punching out a circular shape from the sheet material S, and has an opening 41 and a slit 43.

[0036] The opening 41 is a circular through-hole. The slit 43 is a straight cut between the circular outer circumference 40A of the weed control sheet 40 and the opening 41. The slit 43 is not limited to a straight line, but can be any shape, such as a curved, wavy, or zigzag shape. The pesticide 42 is made of the same material as in the above embodiment and is contained throughout the entire surface of the weed control sheet 40. That is, the entire weed control sheet 40 (including the vicinity of the opening 41) is considered a pesticide area containing the pesticide 42. The pesticide 42 is contained on one side of the weed control sheet 40, but is not limited to this, and may be contained on both sides of the weed control sheet 40. In addition, the pesticide 42 may penetrate into the interior of the sheet material S.

[0037] The weed control sheet 50 (an example of the "first weed control sheet") is formed in a strip shape and can be rolled up, and as shown in Figure 7, a circular first opening 51 is formed through it. In this embodiment, the weed control sheet 50 does not contain pesticide 42, but the weed control sheet 50 may contain pesticide 42 near the first opening 51. The weed control sheet 40 is more preferable if it is made using a portion of the sheet material S that has been punched out in a circular shape when forming the first opening 51 in the weed control sheet 50, as this can reduce manufacturing costs.

[0038] This section explains how to use the weed control sheet 40. A weed control sheet 50 is laid in field F, and crop C is planted through the opening 51. Next, the slits 43 in the weed control sheet 40 are opened and bent, and the stems of crop C are passed through the slits 43 from the outer circumference 40A to the opening 41. As a result, the opening 51 of the weed control sheet 50 is covered by the weed control sheet 40 (Figure 7).

[0039] According to Embodiment 2, the following actions and effects are achieved. The weed control sheet 40 has one opening 41, and a slit 43 is formed between the outer perimeter 40A (edge) of the weed control sheet 40 and the opening 41, allowing crops C to pass from the outer perimeter 40A to the opening 41. In this way, even if it is not easy to lay the weed control sheet by passing the crop C through the opening of the weed control sheet from above the crop C, it becomes possible to lay the weed control sheet 40 around the crop C by passing the crop C through the slit 43 to the opening 41 from the outer perimeter 40A of the weed control sheet 40.

[0040] Furthermore, the weed control sheet comprises a first weed control sheet 50 having a plurality of first openings 51, and a second weed control sheet 40 covering the area within the first openings 51 and having second openings 41, the slits 43 being formed in the second weed control sheet 40, and the pesticide 42 being contained in the vicinity of the second openings 41. In this way, the second weed control sheet 40 can suppress the growth of weeds from inside the first opening 51.

[0041] <Other Embodiments> The technologies described herein are not limited to the embodiments described above in the description and drawings, and the following embodiments, for example, are also included in the technical scope of the technologies described herein. (1) An indication that the weed control sheet is for specific crop C may be added. For example, an indication that it is for specific crop C (e.g., for watermelon, pumpkin, etc.) may be added to the weed control sheet itself or its packaging so that it can be easily recognized as a weed control sheet for specific crop C. However, this is not limited to this, as the shape of the weed control sheet (shape, size, spacing of openings, etc.) differs depending on the type of specific crop C, so these differences may be used to identify which specific crop C the weed control sheet is for.

[0042] (2) The openings 11, 21, 31, and 41 are circular through holes, but are not limited to this. For example, the openings may be notches that can penetrate crop C. (3) The pesticides 12, 22, 32, and 42 were provided along the entire circumference of the openings 11, 21, 31, and 41, but are not limited to this. For example, the pesticides may be contained in a region along an arc (not the entire circumference, but at a predetermined angle from the center) of the openings 11, 21, 31, and 41. Furthermore, the pesticides 12, 22, 32, and 42 are not limited to a range of a certain width (dimensions from the opening), but the range in which the pesticides are contained (dimensions from the opening) may differ depending on the position of the opening edge (angle from the center of the opening). [Explanation of Symbols]

[0043] 10, 20, 30: Weed control sheet 11,21,31: Aperture 12,22,32,42: Pesticides 40: Second weed control sheet 40A: Outer perimeter (edge) 41: Second opening 43: Slit 50: First weed control sheet 51: First opening C: Crop (specific crop) D1~D3: Predetermined intervals F: Field P: Fixing pin R: Bar S1: Seat body S2: Extension part S: Sheet material U1,U2: ridge W: Walking area

Claims

1. A weed control sheet having openings formed therein that allow crops to pass through, The weed control sheet has a pesticide area around the opening that contains pesticides, and a non-pesticide area that does not contain pesticides at a predetermined distance from the opening.

2. A weed control sheet formed in a strip shape and capable of being wound into a roll, 2. The weed control sheet according to claim 1, wherein the openings are plural, and the pesticide areas are formed at predetermined intervals in the longitudinal direction.

3. 3. The weed control sheet according to claim 2, wherein the predetermined intervals are intervals suitable for the cultivation of specific crops, and the weed control sheet is marked to indicate that it is a weed control sheet for the specific crops.

4. the opening is one, 2. The weed control sheet according to claim 1, wherein a slit is formed between an edge of the weed control sheet and the opening, allowing the crops to pass from the edge to the opening.

5. The weed control sheet according to claim 4 is a second weed control sheet, and the opening is a second opening, a weed control sheet provided with the second weed control sheet and a first weed control sheet having a plurality of first openings formed therein that allow crops to pass through; the second weed control sheet covers an area within the first opening, the first weed control sheet does not contain any pesticides, The entire second weed control sheet is an agrochemical area containing agrochemicals. Weed control sheet.

6. a sheet body portion having a plurality of the openings formed therein and covering the ridges of the field; 4. The weed control sheet according to claim 2 or 3, further comprising an extension portion that extends laterally from the sheet main body portion, does not have the openings formed therein, and is capable of covering the ground between the ridge and an adjacent ridge.

7. The weed control sheet according to any one of claims 1 to 5, wherein the pesticide includes chili pepper.

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