Chemosterilant for inhibiting insects from reproduction and preparation method thereof

Abstract

The invention discloses a chemosterilant for inhibiting insects from reproduction and a preparation method thereof. The pharmaceutical composition is composed of the following raw materials in parts by weight: 1-20 parts of gossypol, 0.5-10 parts of chitosan oligosaccharide, 0.1-5 parts of sex attractant, 0.1-5 parts of acetone and 1500-5000 parts of distilled water. The preparation method comprises the following steps: S1: weighing the gossypol, chitosan oligosaccharide, sex attractant, acetone and distilled water according to parts by weight for later use; S2: mixing the chitosan oligosaccharide and sex attractant to obtain a mixture for later use; S3: dissolving the gossypol in the acetone to obtain a gossypol dissolved solution for later use; S4: mixing the mixture in the step S2 with the gossypol dissolved solution in the step S3, pouring the product into the distilled water, and sufficiently stirring to obtain a stirred solution; and S5: carrying out packaging and sterilization on the stirred solution in the step S4 to obtain the finished product. The experiment indicates that after the gossypol and the auxiliary material chitosan oligosaccharide are matched and used according to a certain ratio, the sterilization effect is obviously enhanced under the condition of the same dosage, which indicates that the chitosan oligosaccharide can effectively lower the consumption of gossypol and the chitosan oligosaccharide and gossypol have a synergistic effect.

Description

technical field [0001] The invention belongs to the field of biotechnology, and relates to a sterile agent for inhibiting insect reproduction and a preparation method thereof. Background technique [0002] Cotton bollworm belongs to the borer pests of the Noctuidae family Spodoptera genus, and is widely distributed in the cotton area of ​​the Yellow River Basin and the cotton area of ​​the Yangtze River Basin. When cotton bollworm damages cotton, it mainly eats buds, flowers and bolls of cotton with larvae. After the buds are eaten by moths, the bract leaves open and turn yellow, and fall off after 2-3 days; when the stigma and anthers of the flowers are damaged, they cannot pollinate and form bolls; when the green bells are hollowed out by moths, they often induce pathogen infection, resulting in rotten bells and larvae. Cotton tender tips and young leaves form holes and nicks, resulting in headless cotton and affecting the normal development of cotton. In addition to aff...

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Problems solved by technology

However, the use of any chemical preparations has a certain degree of pollution to the soil and the environment

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