Efficient insecticide for chrysanthemum planting

The invention discloses an efficient insecticide for chrysanthemum planting, and relates to the technical field of insecticides. The efficient insecticide is prepared by the following steps: preparingmodified alginic acid from alginic acid and cholesterol under the action of a catalyst, mixing the modified alginic acid with an emulsion of pyrethroid for adsorbing the pyrethroid onto a modified alginic acid molecular chain, preparing modified microspheres from polylactic acid, modified glucan and a chrysanthemum extracting solution, mixing the modified microspheres with the modified alginic acid, and adding chitosan and a cross-linking agent to prepare the efficient insecticide for chrysanthemum planting. The efficient insecticide for chrysanthemum planting, prepared by the invention, hasa relatively good insecticidal effect and can kill a large number of chrysanthemum pests in a short time. 本发明公开了一种高效的菊花种植用除虫剂，涉及除虫剂技术领域。本发明先将海藻酸和胆固醇在催化剂作用下制得改性海藻酸，然后将改性海藻酸与拟除虫菊酯的乳化液混合，将拟除虫菊酯吸附于改性海藻酸分子链上，然后，利用聚乳酸、改性葡聚糖和菊花提取液共同制