摘要
【目的】明确药剂18．7％嘧菌酯·丙环唑SE对玉米大斑病防治效果，探索最佳使用剂量、施药时间和使用方法；评价其对供试作物的安全性。【方法】参照田间药效试验准则进行，采用茎叶喷雾、定期调查的方法。【结果】18．7％嘧菌酯·丙环唑sE在使用剂量75．0-210．0ga．i．／hm2时，对玉米大斑病防治效果达90％以上。对玉米植株生长发育等有促进作用，但与空白对照比较，差异不显著。【结论]18．7％嘧菌酯·丙环唑SE在玉米7叶期喷施或在玉米大喇叭口期喷施亦可。使用剂量为18．7％嘧菌酯·丙环唑sE150ga．i．／hm2。
[Aims] The study aims to identify the control efficacy of azoxystrobin and propiconazole 18.7% SE to northern leaf blight, and to explore the desirable dosage range, the application period and using methods, and to evaluate the safety on corn. [Methods] These experiments were carried out according to pesticide-guidelines for the field efficacy trials. It was done by stern-leave sprayed during corn big trumpet period and investigated on regular time. [Results] The control effect were more than 90.0% of the azoxystrobin and propiconazole 18.7% SE in the range of 75.0-210.0 g a.i./laa. Furthermore, it had the function to promote maize growth and development. But the diffenrence was not significant compared with control. [Conclusions] The desirable using time is on the seventh leaf stage or corn trumpet period. The optimum dose of azoxystrobin and propiconazole 18.7% SE is 150 g a.i./ha.
出处
《农药》
CAS
CSCD
北大核心
2013年第10期759-760,764,共3页
Agrochemicals
基金
农业部行业专项项目(scic(SH)20114151)
关键词
嘧菌酯
丙环唑
玉米大斑病
azoxystrobin
propiconazole
northern leaf blight
