Matrine insecticide and preparation method thereof

The invention relates to the technical field of biopesticides, and discloses a matrine insecticide and a preparation method thereof. The matrine insecticide is prepared from the following raw materials in parts by weight: 40 to 50 parts of matrine, 10 to 20 parts of tannic acid, 15 to 30 parts of jasmonic acid magnetic nano composite material, 10 to 20 parts of emulsifier and 1 to 8 parts of additive, wherein the jasmonic acid magnetic nano composite material is prepared from Fe3O4/SiO2 which is subjected to surface amination and jasmonic acid. The matrine insecticide prepared from the specific raw materials according to the specific ratio is excellent in comprehensive performance, the knockdown quick-acting property and the insecticidal rate of the insecticide can be improved, the use amount of chemical pesticides is reduced, and the influence on the environment and non-target organisms is reduced. 本申请涉及生物农药技术领域，本申请公开了苦参碱杀虫剂及其制备方法。苦参碱杀虫剂，包括以下重量份数原料，苦参碱40-50、单宁酸10-20份、茉莉酸磁性纳米复合材料15-30份、乳化剂10-20份和助剂1-8份；其中，所述茉