几种杀虫剂防治棉花伏蚜的田间防效比较试验  

Comparison of Field Trial of Several Pesticides against Aphis gossypii

作　　者：魏明峰[1] 张贵云[1] 刘珍[1] 范巧兰[1] 张丽萍[1] 

机构地区：[1]山西省农业科学院棉花研究所,山西运城044000

出　　处：《农药》2012年第9期691-692,共2页Agrochemicals

基　　金：山西省科技攻关项目(20110311003-2)

摘　　要：【目的】为明确200g，L吡虫啉SL、200g／LT硫克百威EC、50％吡蚜酮棉蚜的防治效果，开展了3种药剂的田间防效试验。【结果】以200g／L吡虫啉SLl5～45ga．i．／hm^2、200g/L硫克百威EC90～180ga．i．／hm^2和50％吡蚜酮WG60—90ga．i．／hm^2剂量叶面喷雾，药后l、7d防效分别为82.31％~92．02％、77．23％～95.31％、76．67％～91．11％和86．30％一96．71％、86．83％一96．53％、94．87％一98．73％。【结论】200gmn吡虫啉sL和50％毗蚜酮wG持效期均在7d以上，200g／L丁硫克百威Ec速效性较强。200g／L吡虫啉SL、200g／L丁硫克百威Ec和50％吡蚜酮wG的推荐使用剂量分别为30～45、135—180、60—75ga．i．／hm^2。[Aims] The field efficacy trial was conducted to confirm the control effect of imidacloprid 200 g/L SL, carbosulfan 200 g/L EC and pymetrozine 50% WG on Aphis gossypff. [Results] The results showed that the efficacy of imidacloprid 200 g/L SL, carbosulfan 200 g/L EC and pymetrozine 50% WG with dosages of 15-45, 90-180 and 60-90 g a.i./ha respectively were 82.31-92.02, 77.23-95.31 and 76.67-91.11% against Aphis gossypii on the first day after spraying treatment, the efficacy were 86.30-96.71, 86.83-96.53 and 94.87-98.73% respectively on the seventh day. [Conclusions] Persistence period of both of imidacloprid 200 g/L SL and pymetrozine 50% WG reach over 7 days, carbosulfan 200 g/L EC has good readily availability. The usage of imidacloprid 200 g/L SL, carbosulfan 200 g/L EC and pymetrozine 50% WG with 30-45, 135-180 and 60-75 g a.i./ha are recommended respectively.

关 键 词：杀虫剂 棉蚜 防效 

分 类 号：S482.3[农业科学—农药学]