明确21%噻虫嗪悬浮剂对麦长管蚜的防治效果,可为该药剂的大面积推广应用提供科学依据。2015年和2016年以25%噻虫嗪水分散粒剂25.2 g a.i./hm~2为对照药剂,对21%噻虫嗪悬浮剂进行了防治麦长管蚜的田间药效试验。结果表明:施药后第1天、第3天和第7天,21%噻虫嗪悬浮剂18.9 g a.i./hm~2处理的防效均显著低于对照药剂,25.2 g a.i./hm~2处理的防效与对照药剂相当,而31.5 g a.i./hm~2处理的防效明显优于对照药剂。利用21%噻虫嗪悬浮剂防治麦长管蚜具有良好的速效性,持效期可长达7 d以上,且对小麦红蜘蛛有一定的兼治作用,对供试作物及试验区内的其他有益生物安全,是一种理想的可供选择的防治麦长管蚜药剂。
【英文摘要】
The paper aims to assess the control efficacy of 21% thiamethoxam SC against Sitobion avenae and to provide scientific basis for its large-scale popularization and application. The control efficacy of 21% thiamethoxam SC on S. avenae was tested with the control of 25% thiamethoxam WDG( 25.2 g a.i./hm~2) in 2015 and2016. The results showed that compared with the control,the efficacy of 21% thiamethoxam WG at the dosage of18.9 g a.i./hm~2 one day,three days and seven days after application was significantly l...