Method for preparing pesticide from eupatorine

Abstract

The invention provides a method for preparing a pesticide from eupatorine. The method comprises the following steps: 1, preparing eupatorine: taking fresh Eupatorium adenophora Spreng., washing the Eupatorium adenophora Spreng., drying and crushing the Eupatorium adenophora Spreng., immersing the Eupatorium adenophora Spreng. in an extractant at 45-80 DEG C for 1-10 h, filtering the obtained solution, carrying out rotary evaporation, carrying out extraction, carrying out chromatography, and carrying out concentration to obtain eupatorine extract; 2, preparing extract liquids: taking Fragrant Eupatorium Herb, pearl shells and Lantana camara L, washing and crushing above three raw materials, respectively immersing the three raw materials in a solvent and a cosolvent, filtering obtained solutions, carrying out rotary evaporation, and carrying out extraction to obtain a Fragrant Eupatorium Herb extract liquid and a Lantana camara L extract liquid; and 3, mixing: uniformly mixing and heating the Fragrant Eupatorium Herb extract liquid, bamboo juice, the Lantana camara L and eupatorine, adding a surfactant, stirring the obtained mixed solution and the surfactant, adding a stabilizer, water and a synergistic leveling agent, uniformly mixing above substances, and standing the obtained solution to obtain the pesticide. Effective insecticidal components in the Eupatorium adenophora Spreng., the Fragrant Eupatorium Herb and the Lantana camellia L are fully extracted, and the pesticide with the advantages of excellent insecticidal effect, good stability and no pollution to environment is obtained through optimizing pesticide preparation steps.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and in particular relates to a method for preparing pesticides by using euprine. Background technique [0002] Eupatorium adenophorum (scientific name: Eupatorium adenophora Spreng.): Perennial herb or semi-shrub-like plant, with strong and well-developed rhizomes, erect, plant height 30-200 cm, opposite branches, oblique, purple stems, covered with white or rust-colored pubescence, opposite leaves, The leaves are thin, ovate, triangular or diamond-shaped ovate, green on the ventral surface, light-colored on the back, with sparse, thick and irregular serrations on the edge, and wavy shallow serrations or nearly entire margins at the bottom of the inflorescence. The flower head is small and the diameter Up to 6 mm, arranged in corymbs or compound corymbs at branch ends, containing about 40-50 small flowers, tubular flowers bisexual, white. Seed achenes, dark brown. Each plant can produce ab...

AI Technical Summary

Problems solved by technology

This product has significant killing and preventive effects on vegetables, fruit trees, flowers, forest trees and field crops of Homoptera, Spleen Acarina and other pests, but the effective insecticide formula of this insecticide is mainly euprine , the insecticidal effect and scope may be slightly worse. In the preparation, the various raw materials are simply mixed to make an insecticide, and there is still room for improvement in the preparation process