Chitosan is obtained by deacetylation of chitin, which is widely found in nature. The chemical name is polyglucosamine (1-4)-2-amino-B-D glucose. The natural polymer has excellent properties such as biofunctionality and compatibility, blood compatibility, safety, and microbial degradability in many fields such as medicine, food, chemical, biochemical, and biomedical engineering.

In the application of agricultural production, chitosan not only can make crops grow better, plants are robust, photosynthesis is enhanced, and it also shows obvious effects in stress resistance and pest resistance. Chitosan has a great significance for improving the quality of crops and improving the nutritional value and economic value of food.

Chitosan can be used as a plant growth regulator to promote crop yield improvement, and can also be used as a soil conditioner and for the preservation of post-harvest agricultural products.
Chitosan can induce a broad spectrum of resistance, enhance the plant's own defense ability, inhibit the growth of a variety of plant pathogenic microorganisms, and it is non-toxic and can be microbial degradation, and will not pollute the environment. This makes it possible to play an important role in agricultural production as a new type of green pesticide.

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