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[目的]研究40%溴氰虫酰胺·吡蚜酮WG对烟粉虱的防治效果及有效剂量,为农药登记及示范推广提供科学依据。[方法]按照田间药效试验方法,进行不同剂量40%溴氰虫酰胺·吡蚜酮WG对一品红烟粉虱的防治效果比较。[结果]40%溴氰虫酰胺·吡蚜酮WG对烟粉虱成虫有较好的防治效果,在280~480 g a.i./hm2+0.1%有机硅的剂量下,处理后21 d的防治效果达到85%以上;但40%溴氰虫酰胺·吡蚜酮WG对烟粉虱若虫的效果较差。[结论]40%溴氰虫酰胺·吡蚜酮WG可以作为防治一品红烟粉虱成虫的有效药剂。
[Objective] The research aimed to study the control effect and effective dosage of 40% cyanogen bromide pymetrozine WG on Bemisia tabaci and provide scientific basis for pesticide registration and demonstration. [Method] According to the field efficacy test method, the effects of different doses of 40% cyanogen bromide pymetrozine WG on the control of B. tabaci were compared. [Result] The results showed that 40% of WGB had better control effect on adults of Bemisia tabaci, and the control effect at 21 d after treatment with 280 ~ 480 g ai / hm2 + 0.1% Up to 85%. However, the 40% WGB pyrethroid WG was less effective against B. tabaci. [Conclusion] 40% WGB could be used as an effective agent for controlling adults of Poinsettia tabaci.