Full-biocontrollable degradation multifunctional agricultural weeding and soil moisture-preserving mulching film

Abstract

The invention discloses a full-biocontrollable degradation multifunctional agricultural weeding and soil moisture-preserving mulching film. The full-biocontrollable degradation multifunctional agricultural weeding and soil moisture-preserving mulching film is prepared from the following raw materials in percent by weight: a dandelion extract, defatted soybean meal, modified polyamide-amine, 17-33parts of modified starch, micro-crosslinked polyvinylpyrrolidone, corn protein, carboxymethyl cellulose, a modified polyacrylic copolymer, sodium alginate, carob bean gum, a polyoxyethylene / polyoxypropylene copolymer, modified sodium polyacrylate, acetophenone, sodium tripolyphosphate, sodium hexametaphosphate and succinic anhydride. The mulching film disclosed by the invention can achieve the purpose of controlling the degradation rate by controlling the crosslinking degree, not only has the heat-preserving and moisture-preserving functions, but also can be completely biodegraded after use, eliminates the pollution of residual fragments of an ordinary mulching film to soil, has outstanding weeding and insect-repellent effects, can greatly reduce the using amounts of fertilizers and pesticides, reduces the cost, protects the ecological environment, preserves soil moisture and extirpates weeds.

Description

technical field [0001] The invention relates to an agricultural mulch film, in particular to a fully biologically controllable degradable multifunctional agricultural mulch film for weeding and moisture conservation. Background technique [0002] Since the early 1950s, with the development of the plastics industry, Japan and developed countries in Europe and America began to apply plastic films to agricultural production. The warming and water retention functions of mulching lead to increased crop yield and expanded crop suitable area. This technology has brought about changes in agricultural production methods and a leap in agricultural productivity. Although China began to conduct relevant research in the late 1970s, and began to apply plastic film to agricultural production in the 1980s, the application area and scope have come from behind, and China has become the country with the largest plastic film mulching cultivation area. China's plastic film mulching cultivation ...

AI Technical Summary

Problems solved by technology

[0004] Chinese Patent Publication No.: "CN102942770A" discloses a fully biodegradable agricultural mulch film. The mulch film can be completely biodegradable and has little impact on the environment. It is a green agricultural mulch film, but it has high cost, mechanical properties, and water resistance. Poor, high price, poor film-forming ductility and other problems still exist, and the mulch film has a single function and cannot meet the needs of actual use

Chinese Patent Publication No.: "CN102492203A" discloses a kind of photo-biological double degradable environmental protection agricultural mulch film. Due to the addition of photosensitizer, natto bacteria powder and ore powder in the polyethylene raw material used for the production of agricultural mulch film, it can be used on agricultural land. Due to the photosensitizer being affected by natural sunlight, the chemical structure changes (decrease in molecular weight), the strength of the material decreases, cracks and breakage occur, but the function is single and cannot be completely degraded. The broken membrane is very harmful and has not reached the degradation Practical purpose

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