Liquid ground film and manufacturing and using method thereof

Abstract

A liquid mulch, which is prepared by fatty acid residue, polyvinyl alcohol, stearyl alcohol, neutral emulsifier and water through pretreatment, saponification, emulsification and cooling process, the use method of this liquid mulch is to add water Dilute it, and then evenly spray it on the flat row ground or leaf surface. The product is relatively cheap, the manufacturing process is simple, and it is very convenient to use; the liquid film also has the effect of preventing soil moisture from evaporating and increasing soil temperature.

Description

technical field [0001] The invention belongs to mulch, and in particular relates to a liquid mulch; meanwhile, it also relates to a method for making the mulch and a method for using it. Background technique [0002] At present, plastic mulch is widely used in farmland. This kind of mulch has the functions of increasing temperature, saving water and making crops mature early during use. However, because this kind of mulch is mainly made of polyethylene, which is difficult Degraded materials, with its extensive use, more and more mulches remain in the soil, and they accumulate to form a barrier layer, which hinders the development of crop roots and the absorption of water and nutrients, thereby affecting the growth and production of crops. Especially the effect on fibrous root crops is more obvious; in addition, in order to keep the agricultural film in a stable state under temperature changes and sunlight, heavy metal salts such as Pb, Cd, Zn, Ba, Sn and organic compounds ar...

AI Technical Summary

Problems solved by technology

[0002] At present, plastic mulch is widely used in farmland. This kind of mulch has the functions of increasing temperature, saving water and making crops mature early during use. However, because this kind of mulch is mainly made of polyethylene, which is difficult Degraded materials, with its extensive use, more and more mulches remain in the soil, and they accumulate to form a barrier layer, which hinders the development of crop roots and the absorption of water and nutrients, thereby affecting the growth and production of crops. Especially the effect on fibrous root crops is more obvious; in addition, in order to keep the agricultural film in a stable state under temperature changes and sunlight, heavy metal salts such as Pb, Cd, Zn, Ba, Sn and organic compounds are often added in the production process. Compounds, in the use of plastic film, these heavy metals are easily dissolved into the soil, causing soil pollution; the plasticizers added in the production of plastic film - phthalic acid and diisobutyl ester can also destroy the formation of chlorophyll in crops, making the leaves white resulting in reduced crop yields

Therefore, some new mulch films are being developed recently. For example, the patent application document with the application number 02121393.3 discloses "a kind of lignin water-saving composite liquid mulch film". This mulch film is composed of lignin solution, chitosan, collagen , surfactant and foaming agent, this kind of mulch can avoid the disadvantages of plastic mulch, but the manufacturing cost is higher