阿维菌素微囊悬浮剂的制备及其田间药效试验

目的]阿维菌素是一种具有极高杀虫活性的十六元大环内酯杀虫剂,目前主要应用剂型为乳油,乳油中的有机溶剂会造成环境污染和资源浪费;微囊悬浮剂可改善制剂的环境相容性,抑制有效成分因环境因素造成的分解,延长持效期。采用细乳液聚合法制备了1.8%阿维菌素/聚丙烯酸酯微囊悬浮剂。利用激光粒度分析仪、透射电镜和FT-IR对制备的阿维菌素/聚丙烯酸酯微囊悬浮剂粒子进行了表征,田间药效试验考察了其对橘全爪螨的防治效果。结果]微囊悬浮剂粒子平均粒径为316 nm,具有核/壳结构,不含有毒有机溶剂;对橘全爪螨喷药后1、3、10、15 d的防效达99.83%、98.75%、97.49%、98.0%,与相同剂量的对照药剂阿维菌素乳油的防效基本相当,喷药后20、30 d防效为96.45%、88.17%,显著优于乳油(93.45%、76.04%)。结论]细乳液聚合法制备的阿维菌素微囊悬浮剂环境友好,持效期明显延长,防效优于乳油。

The Preparation and Field Efficacy Trials of Abermectin Aqueous suspension Concentrate

Abamectin is a sixteen-member macrolide pesticide with high insecticidal activity.Emulsion of abamectin(EC) is mostly used in present,but a lot of organic solvents used in emulsion preparation results in environmental polution and wasting of resources.Compatibility with environment could be improved by preparing aqueous suspension concentrate.The decomposition of active ingredients is restrained and the efficacy duration is prolonged.Here,abamectin 1.8% cs were prepared by the method of miniemulsion polymer...