黄瓜霜霉病菌对氟噻唑吡乙酮的敏感性测定及其田间防效  

Susceptibility and Field Efficacy of Oxathiapiprolin against the Pathogen of Cucumber Downy Mildew

作　　者：高苇 杨利娟 张春祥 王勇[1] GAO Wei;YANG Li-juan;ZHANG Chun-xiang(Institute of Plant Protection,Tianjin Academy of Agricultural Sciences,Tianjin 300381)

机构地区：[1]天津市农业科学院植物保护研究所,天津300381

出　　处：《安徽农业科学》2020年第24期142-143,187,共3页Journal of Anhui Agricultural Sciences

基　　金：国家重点研发计划子课题“果蔬种子种苗带菌检测及其处理新技术研发”(2017YFD0201602);天津市科技计划项目“西青区设施蔬菜农药减施增效全程绿色防控技术中试”(17YFNZNC00190)。

摘　　要：明确天津地区黄瓜霜霉病菌对氟噻唑吡乙酮的敏感性及田间防效,为该病害的防治提供理论依据。采用离体叶片法测定黄瓜霜霉病菌对氟噻唑吡乙酮的敏感性,并进行田间防效试验。结果表明,24株黄瓜霜霉病菌对氟噻唑吡乙酮存在敏感性差异,EC 50值为0.0026~0.0713μg/mL。田间试验表明,10%氟噻唑吡乙酮可分散油悬浮剂对黄瓜霜霉病防效均在85%以上。黄瓜霜霉病菌对氟噻唑吡乙酮具有较高敏感性,田间防效高,推荐使用有效剂量19.50~30.00 g/hm^2。To clarify the susceptibility and control effect of oxathiapiprolin against cucumber downy mildew in a view of the application of this fungicide in the field.The susceptibility test was assayed by vitro leaf disc method and field efficacy trials were carried out.The results showed that different susceptibility was found among 24 downy mildew pathogen,the EC 50 values of oxathiapiprolin ranged from 0.0026 to 0.0713μg/mL.In field trials,the control effect of oxathiapiprolin 10%OD to cucumber downy mildew was higher than 85%.Cucumber downy mildew pathogen was sensitive to oxathiapiprolin,and 19.50-30.00 g/hm^2 of oxathiapiprolin 10%OD was recommended in field.

关 键 词：黄瓜霜霉病 氟噻唑吡乙酮 敏感性 田间防效 

分 类 号：S482.2[农业科学—农药学]