Degradable mulching film with opening parts

Abstract

The utility model discloses a degradable mulching film with opening parts, which is of a three-layer composite structure and sequentially comprises a paper base layer, a nutrient layer and a waterproof shading layer from bottom to top, the mulching film is provided with uniformly distributed cross-shaped opening parts, each cross-shaped opening part comprises four intermittent cut-off lines with the same starting point, and each intermittent cut-off line penetrates through the paper base layer, the nutrient layer and the waterproof shading layer; a drainage groove is formed in the position of each intermittent cutting-off line, the drainage grooves are symmetrically arranged with the intermittent cutting-off line as the symmetry axis, and the tip ends of the drainage grooves face the intersection point of the four intermittent cutting-off lines. The mulching film provided by the utility model is degradable, is convenient for trepanning, and has a drainage effect.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural products, in particular to a degradable ground film with an opening portion. Background Art

[0002] my country is the world's largest agricultural country and the country with the largest production and use of agricultural mulch films. With the increase in the use of mulch films, farmland pollution is becoming increasingly serious, especially the amount of residual film in the fields is increasing year by year.

[0003] The raw materials of the plastic mulch that are widely used at present are mainly polyethylene (PE), polyvinyl chloride, etc. The raw materials for its manufacture are mainly extracted from petroleum, coal and natural gas, so it is difficult to degrade and pollute the environment. Since the mulch film remains on the land, it needs to be recycled before sowing in the second year after the crop is harvested. The recycling operation cost is high. If the mulch film is not recycled for a long time, it will seriously affect the physical and chemical structure of the soil, the adaptability of field machinery and the safety of animal husbandry.

[0004] In addition, most of the ground films in the prior art have a flat film surface. When the crops under the film emerge from the ground, the film surface needs to be manually destroyed to form holes to help the crops pass through the film. However, it is not easy to control the strength when manually breaking the holes, which can easily cause the holes to be too large, reducing the thermal insulation effect.

[0005] A degradable mulch film with openings that can solve the above problems needs further research and development. Utility Model Content

[0006] The utility model aims to provide a degradable ground film with openings to solve the problems that the ground film in the prior art is not easy to degrade and is not easy to open holes.

[0007] The technical solution adopted to achieve the purpose of this utility model is:

[0008] A degradable ground film with an opening, the ground film being a three-layer composite structure, comprising a paper base layer, a nutrient layer and a waterproof light-shielding layer from bottom to top;

[0009] The ground film is provided with evenly arranged cross openings, each of which includes four intermittent cutting lines with the same starting point, and each intermittent cutting line runs through the paper base layer, the nutrient layer and the waterproof light-shielding layer;

[0010] A drainage groove is provided at the position of each intermittent cutting line. The drainage groove is symmetrically arranged with the intermittent cutting line as a symmetry axis, and the tip of the drainage groove faces the intersection of the four intermittent cutting lines.

[0011] In the above technical solution, the material of the paper base layer is plant fiber.

[0012] In the above technical solution, the color of the waterproof and light-shielding layer is black.

[0013] In the above technical solution, the drainage groove is a funnel-shaped groove.

[0014] In the above technical solution, the thickness of the ground film is 0.10-0.25 mm.

[0015] In the above technical solution, tear strips are provided at intervals in the width direction of the ground film.

[0016] In the above technical solution, the length of the easy-tear strip is the same as the width of the ground film, and extends from one length edge of the ground film to the other length edge.

[0017] In the above technical solution, each easy-tear strip is composed of two intermittent cutting lines arranged throughout the length.

[0018] In the above technical solution, one to three rows of cross openings are provided on the ground membrane.

[0019] In the above technical solution, two rows of cross openings are provided on the ground membrane.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The mulch film base of the utility model is degradable and can be returned to the field in the form of organic matter after degradation. When the mulch film is used up, there is no need to pick up the film or perform mechanical processing. After harvesting, the paper mulch film and crop residues can be plowed into the field together, which saves time and effort and reduces labor costs. The nutrient layer can slowly release nutrients and can supplement necessary elements during crop growth. The waterproof and light-shielding layer makes the paper mulch film have low light transmittance, can remove weeds, reduce the use of pesticides, and has high hydrophobicity. It can be used to replace black plastic mulch films and solve problems such as the weak functionality of existing mulch films.

[0022] 2. The setting of the cross opening part of the utility model can be used for different types of crops, and the opening size can be extended more conveniently according to the crop space. Compared with other circular openings, it has better root protection and low light transmittance. The four funnel-shaped drainage grooves separated by the cross opening part allow the water sprayed on the surface of the paper film to flow down smoothly and be distributed to the roots of the crops, nourishing the crops. The easy-to-tear strip structure at the cut-off point makes the paper film easier to cut manually, which is convenient for farmland operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is a schematic structural diagram of the utility model.

[0024] Figure 2 This is a top view of the ground film.

[0025] In the figure: 1-waterproof light-shielding layer, 2-nutrient layer, 3-paper base layer, 4-easy-tear strip, 5-drainage groove, 6-cross opening portion. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] Example 1

[0028] A degradable ground film with an opening, the ground film is a three-layer composite structure, which includes a paper base layer 3, a nutrient layer 2 and a waterproof light-shielding layer 1 from bottom to top, the material of the paper base layer 3 is plant fiber, preferably bamboo pulp fiber and / or waste paper fiber, the main material of the nutrient layer 2 is attapulgite and water-soluble fertilizer, the main material of the waterproof light-shielding layer 1 is chitosan, rosin glue and black dye, and the color of the waterproof light-shielding layer 1 is black. The components of the paper base layer 3, the nutrient layer 2 and the waterproof light-shielding layer 1 are all prior art.

[0029] When the ground film structure is laid on the soil, the paper base layer 3 can be decomposed into organic matter to nourish the soil. Farmers do not need to pick up the film or perform mechanical treatment, which saves time and effort. The nutrient layer 2 supplements nutrients during the growth process of crops, and the nutrients are integrated with the slow-release material. The nutrient layer 2 is integrated with the paper base layer 3, and the nutrients can be slowly released to the surface, which is more conducive to the healthy growth of crops than simply returning them to the field after degradation. The waterproof shading layer 1 reduces the light transmittance of the ground film, inhibits photosynthesis, reduces the use of pesticides, achieves a weed control effect, and has good hydrophobicity after surface sizing.

[0030] The mulch film is provided with cross openings 6 arranged evenly, each cross opening 6 includes four intermittent cut lines with the same starting point, and each intermittent cut line runs through the paper base layer 3, the nutrient layer 2 and the waterproof light-shielding layer 1. The cross openings 6 can be arranged to more conveniently extend the size of the opening according to the crop space. If the crop is a small crop, a part of the intermittent cut line can be torn off, so that the opening is smaller. If the crop is a large crop, the entire intermittent cut line can be torn off, which not only avoids the problem of difficulty in grasping the opening size when opening directly, but also has better root protection, lower light transmittance and better thermal insulation effect than fixed-shaped circular openings.

[0031] A drainage groove 5 is provided at the position of each intermittent cutting line. Furthermore, the drainage groove 5 is symmetrically arranged with the intermittent cutting line as the axis of symmetry, and the tip of the drainage groove 5 faces the intersection of the four intermittent cutting lines, so that when the four intermittent cutting lines are torn to any length, the drainage groove 5 can drain the water to the root of the crop. Preferably, the drainage groove 5 is a funnel-shaped groove. When the cross opening 6 is opened, the tip of the drainage groove 5 is tilted toward the root, which plays a drainage role, so that the water sprayed on the surface of the paper mulch can flow down smoothly and be distributed to the root of the crop to nourish the crop. Because the base layer of the degradable mulch is the paper base layer 3, its surface is easy to be pressed and formed, which provides a basis for the pressing and forming of the drainage groove 5.

[0032] Example 2

[0033] This embodiment is further limited based on the embodiment 1.

[0034] The thickness of the mulch film is 0.10-0.25mm. Due to its three-layer structure and easy-to-open and easy-to-tear design, it has excellent comprehensive performance when used. It is not only environmentally friendly, but also can reduce the burden and increase income for farmers.

[0035] The mulch film is provided with tear strips 4 at intervals in the width direction, which are convenient for manual cutting after covering a field. Each tear strip 4 is composed of two intermittent cutting lines arranged throughout the length, and each tear strip 4 extends from one end of the mulch film to the other end.

[0036] The ground film is provided with one to three rows of cross openings 6. As shown in the figure, the ground film is provided with two rows of cross openings 6, which can cover two rows of crops.

[0037] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0038] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A degradable ground film with an opening, characterized in that: The ground film is a three-layer composite structure, which includes a paper base layer, a nutrient layer and a waterproof and light-shielding layer from bottom to top; The ground film is provided with evenly arranged cross openings, each of which includes four intermittent cutting lines with the same starting point, and each intermittent cutting line runs through the paper base layer, the nutrient layer and the waterproof light-shielding layer; A drainage groove is provided at the position of each intermittent cutting line. The drainage groove is symmetrically arranged with the intermittent cutting line as a symmetry axis, and the tip of the drainage groove faces the intersection of the four intermittent cutting lines.

2. The degradable ground film with openings according to claim 1, characterized in that: The material of the paper base layer is plant fiber.

3. The degradable ground film with openings according to claim 1, characterized in that: The color of the waterproof light-shielding layer is black.

4. The degradable ground film with openings according to claim 1, characterized in that: The drainage groove is a funnel-shaped groove.

5. The degradable ground film with openings according to claim 1, characterized in that: The thickness of the ground film is 0.10-0.25 mm.

6. The degradable ground film with openings according to claim 1, characterized in that: Easy-tear strips are arranged at intervals in the width direction of the ground film.

7. The degradable ground film with openings according to claim 6, characterized in that: The length of the tear strip is the same as the width of the ground film, and extends from one length edge of the ground film to the other length edge.

8. The degradable ground film with openings according to claim 6, characterized in that: Each easy-tear strip is composed of two intermittent cutting lines arranged throughout the length.

9. The degradable ground film with openings according to claim 1, characterized in that: The ground film is provided with one to three rows of cross openings.

10. The degradable ground film with openings according to claim 7, characterized in that: Two rows of cross openings are arranged on the ground film.

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