Chitooligosaccharides have the functions of regulating plant growth, development, reproduction and activating plant defense responses. Spraying oligochitosan and its derivatives on crops can control crop growth and improve crop resistance, thereby increasing crop yield and quality.
In order to study the application effect of oligochitosan on cotton and the best spraying period, the experiment selected 5% oligochitosan diluted 1000 times to spray oligochitosan at cotton seedling stage, bud stage and bloom stage respectively. And sprayed once at each time. The test results show that spraying oligochitosan at the flowering and boll stage can increase the boll forming rate, and the final boll forming rate of cotton is the most prominent, and the single boll weight and later yield increase are increased by 9.1%. This shows that spraying oligochitosan during the cotton blooming and boll stage has the best effect on increasing cotton yield and income.