A kind of botanical pesticide and preparation method thereof

Abstract

The invention discloses a botanical pesticide and a preparation method thereof. The preparation method of the botanical pesticide comprises steps as follows: (1), Chinese stellera roots are extracted in an organic solvent I and filtered, a Chinese stellera root extracting solution is obtained, Chinese red pepper is extracted in the organic solvent I and filtered, and a Chinese red pepper extracting solution is obtained; (2), the Chinese stellera root extracting solution and the Chinese red pepper extracting solution obtained in the step (1) are evaporated respectively, and Chinese stellera root extract and Chinese red pepper extract are obtained; (3), the Chinese stellera root extract obtained in the step (2) is extracted with an organic solvent II, Chinese stellera root extract liquor is obtained, the Chinese red pepper extract obtained in the step (2) is extracted with an organic solvent III, and Chinese red pepper extract liquor is obtained; (4) the Chinese stellera root extract liquor and the Chinese red pepper extract liquor which are obtained in the step (3) are mixed, cnidium lactone is added, the mixture is stirred, and the botanical pesticide is obtained. The botanical pesticide is efficient, low-toxicity, broad-spectrum and applicable to pests such as plutella xylostella, lipaphis erysimi, sitophilus zeamais motschulsky, rhizopertha dominica fabricius, tribolium ferrugineum fabricius and the like, on crops and can also effectively control diseases such as powdery mildew, downy mildew, blight and the like.

Description

technical field [0001] The invention relates to a pesticide and a preparation method thereof, in particular to a botanical pesticide and a preparation method thereof. Background technique [0002] In agricultural production, pesticides are an indispensable means of production. Most of the pesticides currently on the market are chemical pesticides. The large and unreasonable use of chemical pesticides has caused a series of problems such as toxic substance residues and drug resistance, which not only seriously threatens the ecological environment. environment, and endanger human safety and agricultural production, has gradually become an important factor restricting the development of my country's agriculture. [0003] Compared with chemical pesticides, botanical pesticides have the advantages of high selectivity, low toxicity, easy degradation, and less resistance. In addition to active ingredients that can significantly prevent and control harmful organisms such as pests and...

AI Technical Summary

Problems solved by technology

[0006] However, due to the large investment in the research and development of new pesticide varieties, the long cycle of putting them on the market, and the research on the mixing of botanical pesticides is still in its infancy, and the composition of botanical pesticides is relatively complex, so the research work is brought many obstacles

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