70%烯啶虫胺·噻嗪酮水分散粒剂的研制

目的]介绍70%烯啶虫胺.噻嗪酮水分散粒剂的配制方法、产品性能及防治效果。方法]选择聚羧酸盐和脂肪醇磺酸盐作为润湿分散剂（分别为3%和13%）、尿素为助崩解剂（5%）、聚乙烯醇、聚乙二醇为黏结剂（1.5%～2.5%）和绢云母粉为填料,采用干式挤压造粒工艺将烯啶虫胺和噻嗪酮原药配制成70%烯啶虫胺.噻嗪酮水分散粒剂,并测定产品性能及田间防治效果。结果]该产品分散性好,悬浮率大于90%,润湿时间小于30 s,崩解时间小于60 s,（54±2）℃14 d的热贮分解率小于5%,各项指标均符合水分散粒剂的要求。田间试验表明,该药剂防治水稻褐飞虱药后3、7和14 d的防效分别为91.40%、95.14%和95.76%,明显高于烯啶虫胺和噻嗪酮单独施用的防治效果。结论]该药剂是防治水稻稻飞虱的理想药剂。

The Preparing on 70% Water Dispersible Granule of Nitenpyram and Buprofezin

Objective] The study aimed to introduce the preparing method,product performance and the controlling effects on 70% water dispersible granule of nitenpyram and buprofezin.Method] With the polycarboxylate and fatty alcohol suphonate as the wet dispersant(3% and 13% resp.),the urea as the aid-disintegrants(5%),the polyvinylalcohol and polyethyleneglycol as the adhesive(1.5%-2.5%)and the sericite powder as the filling material,the original drugs of nitenpyram and buprofezin were mixed and prepared into the 7...