40%克菌·戊唑醇SC对马铃薯早疫病田间防效

Control Effects of Captan·Tebuconazole 40% SC against Potato Early Blight

[目的]明确40%克菌·戊唑醇对马铃薯早疫病的防治效果,为生产上应用提供理论依据。[方法]采用喷雾法进行田间药效试验。[结果]40%克菌·戊唑醇SC 120 g a.i./hm2的防效最好,为79.9%,产量增加39.2%。40%克菌·戊唑醇SC 90 g a.i./hm2和25%嘧菌酯SC 120 g a.i./hm2处理的防效均达到70%以上,二者之间差异不显著。使用40%克菌·戊唑醇SC比25%嘧菌酯SC节约药剂成本223.2~268.2元/hm2。[结论]40%克菌·戊唑醇SC对马铃薯早疫病有较好的防治效果,而且成本较低。推荐使用剂量90~120 g a.i./hm2。

[Aims] This study aims to clarify the control effects of captan·tebuconazole 40% SC against potato early blight, and provide the basis for security application in yield. [Methods] Spray method was adopted to investigate the efficacy of field trial. [Results] The results showed that captan·tebuconazole 40% SC 120 g a.i./ha displayed the best control effect of 79.9%, the yield increased by 39.2%. The control effects of captan·tebuconazole 40% SC 90 g a.i./ha and azoxystrobin 25% SC 120 g a.i./ha treatment reached 70% or more, there was no significant difference between them.The application of captan·tebuconazole 40% SC than azoxystrobin 25% SC can save drug cost 223.2-268.2 yuan/ha.[Conclusions] The potato early blight disease could be effectively controlled by captan·tebuconazole 40% SC, it had lower cost. The recommended dose is 90-120 g a.i./ha in the fields.