28%虫螨腈·噻虫胺悬浮剂的研制及其对韭蛆的田间防效

Preparation of Chlorfenapyr+ Clothianidin 28% SC and the Control Effect of Bradysia odoriphaga

为提高对韭蛆的田间防效,采用湿法研磨法,通过对润湿剂、分散剂、增稠剂进行筛选和优化,得到28%虫螨腈·噻虫胺悬浮剂的优化配方。确定最佳配方为虫螨腈8%、噻虫胺20%、黄原胶0.09%、硅酸镁铝0.9%、SP-27283%、SP-SC31.0%、DP-501.0%、GY-S071.5%、丙二醇3%、消泡剂0.2%、卡松0.1%,水补足至100%。田间试验结果表明,该配方在第7 d对韭蛆的校正防效和虫口减退率均大于90%。

In order to improve the control effect of Bradysia odoriphaga,the chlorfenapyr+clothianidin 28%SC was optimized by wet ultrafine grinding,with wetting agents,dispersing agents,thickening agents screened,and optimized.The optimum formulation consisted of chlorfenapyr 8%,clothianidin 20%,xanthan gum 0.09%,magnesium aluminum silicate 0.9%,SP-27283%,SP-SC31.0%,DP-501.0%,GY-S071.5%,propylene glycol 3%,defoamer 0.2%,casson 0.1%,and water was added up to 100%.The results of field trials showed that the correction control effect and decreased rate of pest were more than 90%on the 7th day.