种子处理对棉花苗蚜的防治效果及对苗期生长的影响  

The Control Effects of Seed Treatment to Aphis gossypii and Its Effects on Cotton Growth

作　　者：张谦[1] 王树林[1] 祁虹[1] 冯国艺[1] 王燕[1] 雷晓鹏[1] 梁青龙[1] 林永增[1] ZHANG Qian;WANG Shu-lin;QI Hong;FENG Guo-yi;WANG Yan;LEI Xiao-peng;LIANG Qing-long;LIN Yong-zeng(Cotton Research Institute,Hebei Academy of Agriculture an Forestry Science,Key Laboratory of Biology and Genetic Improvement of Cotton in Huanghuaihai Semiarid Area,Ministry of Agriculture,P.R.China,Shijiazhuang 050051,China)

机构地区：[1]河北省农林科学院棉花研究所农业部黄淮海半干旱区棉花生物学与遗传育种重点实验室

出　　处：《农药》2019年第7期537-539,542,共4页Agrochemicals

基　　金：国家重点研发计划资助(2017YFD0201900);河北省农林科学院科学技术研究与发展计划项目(2018070201);河北省农林科学院现代农业科技创新工程项目(F18R2018113279);河北省现代农业产业技术体系(HBCT2018040204)

摘　　要：[目的]明确杀虫剂种子处理对苗蚜防效及棉花苗期生长发育的影响。[方法]包衣、拌种和沟施处理,比较了4种药剂对苗蚜的防效及对株高、真叶数的影响。[结果] 30%噻虫嗪FS 12.0 g/kg、70%噻虫嗪WS 4.0 g/kg、2%吡虫啉GR 30 000.0 g/hm2和600 g/L吡虫啉FS 8.0 g/kg为4种药剂的最佳制剂用量,播后35 d的防效分别为84.0%、89.1%、76.7%、76.7%,噻虫嗪对苗蚜的防效优于吡虫啉;种子处理对株高均有一定的抑制作用,施用量越高抑制越明显,除70%噻虫嗪WS 6.0 g/kg,其他施用量对真叶生长具有促进作用。[结论]种子包衣或拌种对苗蚜有很好的防效,该地区棉蚜对吡虫啉敏感性降低,可选择噻虫嗪进行轮换使用。[Aims] This study aims to clarify the control effects of seed treatment with insecticide to Aphis gossypii and its effects on cotton growth.[Methods] The effects of thiamethoxam and imidacloprid on control efficacy,plant height and true leaf growth were compared by different application methods of seed coating,mixing and furrowing.[Results] Field experiments showed that seed treatment with thiazide or imidacloprid had better control effects to A.gossypii.The control efficacy of thiamethoxam was better than imidacloprid.At 35 days after planting date,thiamethoxam 30% FS12.0 g/kg,thiamethoxam 70% WS 4.0 g/kg,imidacloprid 2% GR 30 000.0 g/ha and imidacloprid 600 g/L FS 8.0 g/kg were at the best dosage of four pesticides,their control efficacy on A.gossypii was 84.0,89.1,76.7 and 76.7%,respectively.Seed treatment had inhibitory effects on cotton height,and the higher of the application dosage,the more obvious of the inhibitory effects.For true leaf growth,seed treatments had promoting effects except thiamethoxazine70% WS 6.0 g/kg.[Conclusions] The seed coating or mixing had good control effect on A.gossypii,but the sensitivity in this area decreased to imidacloprid,so thiamethoxam could be selected for pesticide rotation.

关 键 词：种子处理 噻虫嗪 吡虫啉 苗蚜 防治效果 

分 类 号：S482.2[农业科学—农药学]