JP3026574U - Agricultural mulching sheet - Google Patents

Abstract

(57) [Abstract] [Problem] Agricultural mulching sheet that has breathability, water absorption, and heat insulation properties, and also has flexibility that easily fits in the shape of the ridges, and can be returned to the soil by plowing it into the soil after use. To get SOLUTION: A convex projection group 1 which is made of paper P and protrudes vertically and horizontally from one surface a of the paper P at a predetermined interval is provided.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to an agricultural mulching sheet that is laid on a ridge in a field to prevent weeds from growing and protect agricultural crops such as vegetables planted in the ridge.

[0002]

[Prior art]

 From Japanese Utility Model Laid-Open No. 3-74237, an agricultural mulching sheet is known, which is made of a thermoplastic synthetic resin sheet such as polyvinyl alcohol, polyethylene, polypropylene or the like, and a corrugated wall is provided on all or part of the sheet.

[0003]

[Problems to be solved by the device]

 The folds of the above-mentioned known sheet are laid on the ridges, and as the crop grows greatly during use, it does not prevent the folds from growing and growing, and eliminates the trouble of loosening or re-laying the sheet. However, since the material is a thermoplastic synthetic resin, it does not have air permeability and water permeability, so water accumulates on the sheet or moisture accumulates under the sheet, and the roots of crops rot. Sometimes. Furthermore, since it is not returned to the soil, it must be treated as industrial waste when it is no longer used, which is troublesome and costly.

[0004]

[Means for Solving the Problems]

 The present invention was developed in order to solve the above-mentioned problems, and the agricultural mulching sheet according to claim 1 is made of paper, and is a convex protrusion protruding from one side in a vertical and horizontal direction at a predetermined interval. It is characterized by having a group. The agricultural mulching sheet according to claim 2 is made of paper and has a convex first projection group projecting from one side thereof at predetermined intervals in the vertical and horizontal directions, and is located at the interval of the first projection group. And a second convex group of protrusions projecting from the other side.

[0005]

[Embodiment of device]

 1 and 2 show the agricultural mulching sheet of claim 1, and FIGS. 3 and 4 show the agricultural marching sheet of claim 2. Both the mulching sheet according to claim 1 and claim 2 is made of paper having air permeability, water permeability, water absorption, and heat insulation. The raw material for the paper may be pulp or waste paper, but it is preferable to use a lower grade waste paper among the waste papers from the viewpoint of laying it on the ridges for disposal, returning it to soil, and effective use of resources. The thickness of the paper is arbitrary, but the basis weight may be about 50 to 150 g, the thickness may be about 0.15 to 0.3 mm, and may be about the core of corrugated paper. Depending on the type of crop, the period of laying on the ridges varies from about 1 month to about 1 year, but the amount of paper strengthening agent mixed in the raw material during papermaking is adjusted to 1 month, 3 months , For 6 months, for 1 year, etc., harvest crops, and when the period of use is over, plow into the soil and return it to the soil. The product has a width of about 1300 mm and is wound in a roll shape for about 200 m.

The paper P constituting the sheet according to claim 1 has a large number of convex projections 1 protruding from one surface a of the paper P at predetermined intervals in the vertical and horizontal directions. Therefore, the portion of the protrusion 1 on the other surface b of the paper is a depression 1 '. Further, the paper P constituting the sheet according to claim 2 has a large number of convex first projections 1 projecting from one surface a 1 thereof at predetermined intervals in the vertical and horizontal directions, and the paper P located at the intervals of the first projections 1. Has a large number of convex second protrusions 2 protruding from the other surface b. Therefore, the portion of the second protrusion 2 on one side a of the paper is a depression 2 ', and the portion of the protrusion 1 on the other side b of the paper is a depression 1'.

Although the projections 1 and 2 are shown to have a circular planar shape, the projections 1 and 2 are not limited to being circular and may be square or other polygonal shape. When the projection is circular, the diameter is about 2 to 50 mm, the height of the projection from the paper surface, or the depth of the depressions 1'and 2'is about 0.2 to 15 mm. These protrusions can be formed with high efficiency by embossing paper. The vertical and horizontal intervals of the protrusions are arbitrary, but are about 3 to 100 mm. For the diameter of these protrusions, the depth of the depressions, and the vertical and horizontal intervals of the protrusions, the optimum dimensions are selected according to the crop to be applied.

According to the purpose, the mulching sheet according to claim 1 is laid on a ridge with the paper surface a from which the projection 1 projects upward (FIG. 2A), or the paper surface a from which the projection 1 projects downwards. Lay it on the ridges (Figure 2B). On the other hand, in the mulching sheet of claim 2, whether the surface a of the paper is placed on the ridge or the surface b of the mulching sheet is placed on the ridge, either the first projection or the second projection is placed above the paper. Since the depression of either the second projection or the first projection faces upward, it may be laid on the ridge with either surface a or b facing up (FIG. 4).

When the mulching sheet is laid on the ridges in this way, holes are punched in the sheet at optimum intervals according to the agricultural product, or cross-shaped cuts are formed, and the seeds of the agricultural product are laid in the ridges through the holes or the cuts. Or bury roots of crop seedlings in ridges.

[0010]

[Effect of device]

 Since both the mulching sheets of claims 1 and 2 are paper, they have appropriate ventilation, water permeability, water absorption, and heat insulation. Therefore, when it is laid on a ridge, it can be fertilized and sprinkled as far as it is laid by its ventilation, water permeability and water absorption, and can absorb the fertilizer component and water and supply it to agricultural products. In addition, the heat insulation property suppresses the temperature rise of the land even in the midsummer, and the roots of crops can be exhibited well. In addition, its breathability releases the underlying moisture to the atmosphere, preventing root rot.

[0011] Furthermore, when the agricultural product is used for harvesting or the like, it is returned to the soil by plowing it into the soil, so that the treatment after use can be easily performed.

[0012] The protrusions formed by the embossing increase the surface area, so that ventilation and water permeability are further enhanced, and the hardness in the longitudinal or lateral direction of the paper based on the arrangement of the fibers of the paper is eliminated, and the omnidirectional Be flexible to. Therefore, the shape of the ridge is easily adapted, and the work of laying on the ridge is facilitated.

When the mulching sheet according to claim 1 is laid on a ridge with the surface a of the projection 1 protruding from the top, in the case of heavy rain, the rain flows through the gap between the projections 1 and is discharged between the ridges. , Rain does not collect on the seat. Even in this case, the paper can absorb and retain some rain and supply it to the ridges.

When the mulching sheet according to claim 1 is laid on a ridge with the surface a of the projection 1 protruding from the bottom, the fertilizer and water are collected in the depression 1 ′ of the projection 1 formed on the paper surface B. , It can be gradually fed to the ridge. In particular, when solid fertilizer is stored in the depression 1 ', the fertilizer in the depression 1'is gradually melted and supplied to the ridge each time water is sprinkled.

As described above, the mulching sheet according to the second aspect has the same directivity even if it is laid on a ridge with either the surface a or b of the paper facing down, and the distance between the upward projections in the case of heavy rain. Most of the water is drained between the ridges while collecting a small amount of water in the depression. Of course, in this case too, the paper absorbs and retains some rain, and supplies it to the ridges. Also, a small amount of rain accumulated in the depression is gradually supplied to the ridge. Then, the fertilizer can be stored in the depression and gradually supplied to the ridge.

[Brief description of drawings]

FIG. 1A is a plan view of an example of a mulching sheet according to claim 1, and FIG. 1B is a sectional view taken along line XX.

2 (A) and 2 (B) are explanatory views of a usage state of the mulching sheet according to claim 1. FIG.

FIG. 3A is a plan view of an example of a mulching sheet according to claim 2, and FIG. 3B is a sectional view taken along line XX.

FIG. 4 is an explanatory diagram of a usage state of the mulching sheet according to claim 2;

[Explanation of symbols]

 P Paper a One side of paper b Other side of paper 1 Protrusion 1 ′ Dimple due to protrusion 1 2 Second protrusion 2 ′ Dimple due to second protrusion 2

Claims (2)

[Scope of utility model registration request] 1. An agricultural mulching sheet comprising paper and having a group of convex projections protruding from one surface thereof in a vertical and horizontal direction at predetermined intervals. 2. A sheet of paper, having a first projection group of protrusions projecting from one side thereof in a vertical and horizontal direction at a predetermined interval, and
An agricultural mulching sheet, characterized in that it has a convex second projection group that is located at an interval of the first projection group and projects from the other one surface.