Chitosan oligosaccharide is the only cation basic amino oligosaccharide with positive charge in nature. Chitosan oligosaccharides not only have good water solubility, but also have unique physiological activity and can be easily absorbed and utilized by biological organism. As a plant growth regulator, it has the characteristics of no pollution and no toxicity, and has the dual biological regulation functions of drug effect and fertilizer effect. It can not only increase crop yield, but also control diseases.
Chitosan oligosaccharide is a kind of natural high molecular compound oligosaccharides, as elicitor activate the immune response in plants, improve the content of soluble sugar and free proline in plants, enhance the activity of defense enzymes in plants and produce has resistance performance of the material, regulation of plant growth and reproduction, suppress the disease. Chitooligosaccharides can not only promote plant growth and improve plant physiological activity, but also effectively improve crop yield and quality at the later stage of crop growth to achieve the goal of increasing crop yield.