Multifunctional degradable liquid mulch film, production method and uses thereof

Abstract

The invention provides a multi-functional degradable liquid mulching film which comprises the materials with the following weight percentage: a polymer of polyether glycol-polyvinyl alcohol-polyaspartate: 15.0 percent to 40.0 percent, an emulsifier: 1.0 percent to 5.0 percent, a disperse speader: 0.5 percent to 5.0 percent, a pH value regulator: 0.1 percent to 5.0 percent, an antifreeze: 1.0 percent to 5.0 percent, and water as the rest; after the mulching film being watered and sprayed on soil surface, the macromolecules thereof are combined with soil particles and a layer of black curing film can be formed on the soil surface rapidly which can restrain the soil water from vaporizing and prompt the soil to absorb more solar energy, thereby improving the earth temperature. The liquid mulching film completely degrades into a humic acid organic fertilizer, water and carbon dioxide which can be absorbed by crops; the degradation products effectively accelerate the formation of soil grain clusters; and the number of grain clusters with water stability is increased by 10 percent to 15 percent and the volume weight of soil can be decreased by 5 percent to 10 percent. If sprayed on the surface of sandy soil, the liquid mulching film can effectively slow down the infiltration of the water to reserve water, thereby saving the water consumption of irrigation. The liquid mulching film can replace plastic mulching films in a certain range and has a certain social meaning and market prospect.

Description

technical field [0001] The invention relates to a multifunctional degradable liquid mulch film, a preparation method and an application thereof, in particular to a multifunctional degradable liquid mulch film whose main component is a high molecular polymer, and belongs to the technical field of facility agriculture. Background technique [0002] In the past 30 years, the promotion of plastic mulching technology has made important contributions to the increase of my country's grain production and the abundance of people's food baskets. But with the extensive use of plastic mulch, its negative impact is becoming more and more obvious. It is difficult to recycle plastic mulch, and a large amount remains in the farmland, destroying the soil structure and reducing crop production. According to estimates, as long as 4kg of plastic waste remains in each mu of land, the yield of corn will be reduced by about 15%, that of wheat by about 13%, and that of vegetables by 15% to 60%. T...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a multifunctional degradable liquid mulch, its preparation method and application direction. The technical problem to be solved is to make the liquid mulch have excellent film-forming performance, not delay the emergence time of crops, keep warm, and reduce soil moisture evaporation. The efficacy is stable and does not produce environmental ecological pollution