Biodegradable weed-removing mulch masterbatch, weed-removing mulch and preparation method thereof

Abstract

The invention belongs to the field of agricultural films, and proposes a biodegradable weed-removing film and a preparation method thereof. The herbicide is mixed with a coupling agent, a biodegradable resin and a processing aid, and extruded and granulated in an extruder to obtain a biodegradable mulch film. Biodegradable weed-removing masterbatch, this kind of weed-killing masterbatch contains 10-90% biodegradable resin, 2-80% herbicide, biodegradable resin includes PLA, PBS, PPC and PBAT; then biodegradable weed-removing The masterbatch and biodegradable polymer materials are mixed according to the traditional plastic blow molding process to obtain a biodegradable weed-removing mulch film. The proportion of herbicides in this weed-killing mulch film is 0.5-20%. The biodegradable weed-removing mulch film prepared by this method , can adapt to the climate and soil environment in various places, meet the requirements of increasing temperature and moisture conservation required for plant growth and development, and can be decomposed by microorganisms in the cultivated land environment after reaching the use requirements; the preparation method of the present invention is simple and easy, and the prepared film can It meets the use requirements of mechanical farming and has broad application prospects.

Description

technical field [0001] The invention belongs to the field of agricultural films, in particular to a biodegradable grass-removing film and a preparation method thereof. technical background [0002] Plastic agricultural mulch has the effect of retaining moisture and increasing temperature on the soil, and then brings increased production and harvest to agriculture. It has been hailed as the third revolution in agriculture after the collection of chemical fertilizers and seeds in my country. my country is currently the country with the largest production and usage of agricultural mulch in the world, which is 1.6 times the sum of usage of all other countries. [0003] However, while plastic film mulching cultivation technology has brought huge economic benefits to agricultural production and income, ordinary plastic film cannot be recycled and reused, causing serious white pollution problems to the soil and the environment. The plow layer will cause soil compaction, poor perme...

AI Technical Summary

Problems solved by technology

However, the current herbicidal and degradable mulch is mainly prepared by polyethylene resin, which does not have the function of biodegradation, and because polyethylene is used to prepare herbicidal and degradable mulch, affected by the high processing temperature of polyethylene, the types of herbicides that can be selected Limited, and loss of herbicide during processing

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