Agricultural weeding earth membrane capable of being completely biodegraded
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A weeding mulch and biodegradable technology, which is applied in the direction of biocides, herbicides, algicides, and chemicals used for biological control, etc., can solve the problems of easy decomposition and volatilization, high cost, and increased process, so as to achieve beneficial Effects of growth, increased persistence, and reduced toxicity
Active Publication Date: 2013-03-20
ZHANJIANG EXPERIMENTAL STATION CHINESE ACAD OF TROPICAL AGRI SCI
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Problems solved by technology
At present, the herbicide mulch film used in agriculture is made by spraying, smearing, etc. The mulch liquid is mainly adsorbed on the surface of the mulch film, and it is easy to volatilize in the air. The drug effect is not high, and the process is increased, and the cost is high; Or b
Method used
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[0028] Method: Dry the raw material PBAT, add herbicide, chain extender, and release agent and stir evenly at high speed, extrude, modify, and granulate with a twin-screw extruder with L:D=48:1, and use a horizontal film stretcher Carry out film drawing, cutting, packaging, and storage.
[0031] Method: Dry the raw material PBAT, add herbicide, chain extender, and release agent and stir evenly at high speed, extrude, modify, and granulate with a twin-screw extruder with L:D=48:1, and use a horizontal film stretcher Carry out film drawing, cutting, packaging, and storage.
[0034] Method: Dry the raw material PBAT, add herbicide, chain extender, and release agent and stir evenly at high speed, extrude, modify, and granulate with a twin-screw extruder with L:D=48:1, and use a horizontal film stretcher Carry out film drawing, cutting, packaging, and storage.
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Abstract
The invention relates to an agricultural weeding earth membrane capable of being completely biodegraded. The agricultural weeding earth membrane consists of PBAT, PBAT+PLA or PBA+PPC, a herbicide, a chain extender and a de-molding agent. According to a preparation method of the agricultural weeding earth membrane, a transverse type membrane drawing machine is used for carrying out membrane drawing. The method specifically comprises the following steps of: uniformly agitating the PBAT, the PBAT+PLA or the PBA+PPC, the herbicide, the chain extender and the de-molding agent by an agitator; carrying out extrusion modification and granulation on commixed materials by a double-screw extruder; then carrying out the membrane drawing by the membrane drawing machine to form a product; and cutting the membrane into ground membranes with different widths within a range of 35-120cm according to crop cultivation requirements. The ground membranes can be used for enabling the herbicide to be balanced and separated along the degradation of materials capable of being completely biodegraded so that the lasting performance of the pesticides is improved, times for contacting with the pesticides are reduced or are not needed, and the toxin to workers is reduced; and the ground membranes use the materials capable of being completely biodegraded, so that the ground membranes can be completely degraded by microorganisms in soil into CO2 and H2O absorbed by plants; and therefore, the physiochemical performance of the soil is not influenced and the agricultural weeding earth membrane is good for the growth of the plants.
Description
technical field [0001] The invention relates to a weed-killing mulch, in particular to a completely biodegradable agricultural weed-killing mulch, which is a fully biodegradable weed-killing mulch applied to crop cultivation and has a general weeding function, and belongs to the technical field of agricultural mulch production. Background technique [0002] While ordinary plastic film is beneficial to crop growth, weeds are also serious. The labor cost of manual weeding is high, and chemical control has a greater impact on crop growth. Herbicide mulch is a new chemical weed control method developed in recent years, which plays a great role in reducing labor costs, reducing pesticide poisoning and environmental pollution. At present, the herbicide mulch film used in agriculture is made by spraying, smearing, etc. The mulch liquid is mainly adsorbed on the surface of the mulch film, and it is easy to volatilize in the air. The drug effect is not high, and the process is increa...
Claims
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Application Information
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