摘要
通过室内盆栽和田间药效试验,研究了唑菌酯对黄瓜白粉病的防治效果。室内盆栽试验结果表明:唑菌酯对黄瓜白粉病具有明显的保护和治疗作用,保护作用EC50值为13.20mg/L,治疗作用EC50值为26.60mg/L,最高质量浓度250mg/L的保护作用防效是79.65%,治疗作用防效是77.54%。田间试验结果表明:在黄瓜发病后施用20%唑菌酯悬浮剂,仍有明显的防治效果,质量浓度为250mg/L时防效较好,第3次施药后7d防效达74.07%。
The control effects of pyraoxystrobin on cucumber powdery mildew were tested in greenhouses and fields. The greenhouse trial results demonstrated that pyraoxystrobin expressed an excellent protection and control activities to cucumber powdery mildew, the EC50 of protection activity and control activities were 13.20 and 26.60 mg/L, and the control effects were 79.65% and 77.54%. The field trials showed that application of pyraoxystrobin 20% SC after infection could effective control powdery mildew, 7 days after the 3rd round of application, the control efficacy of 250 mg/L was 74.07%.
出处
《农药》
CAS
北大核心
2008年第5期378-380,共3页
Agrochemicals
基金
国家重点基础研究发展计划(“973”项目)(2003CB114400)
“十一·五”国家科技支撑计划课题(2006BAD08)
关键词
唑菌酯
黄瓜白粉病
保护作用
治疗作用
防效
pyraoxystrobin
cucumber powdery mildew
protection action
treatment action
control efficacy
