化学药剂对绿豆尾孢菌叶斑病的田间防治效果比较

Control Efficiency of Chemical Agents against Mung Bean Cercospora Leaf Spot in the Field

[目的]筛选防治绿豆尾孢菌叶斑病的最佳药剂及方案。[方法]通过田间药效试验测定了4种化学药剂对绿豆尾孢菌叶斑病的防治效果。[结果]43%戊唑醇悬浮剂800倍液喷雾、25%嘧菌酯悬浮剂800倍液喷雾、43%戊唑醇悬浮剂500倍液浸种2 h+43%戊唑醇悬浮剂800倍液喷雾、25%嘧菌酯悬浮剂500倍液浸种2 h+25%嘧菌酯悬浮剂800倍液喷雾处理对绿豆尾孢菌叶斑病的防治效果明显,第3次施药后28 d的防治效果均达到80%以上,且具有一定的增产效果,建议在生产上推广应用。[结论]为绿豆尾孢菌叶斑病的化学防治提供了理论依据。

[Objective] The aim was to screen out the optimal agents and scheme to control mung bean Cercospora leaf spot.[Method] The control efficiency of four chemical agents against mung bean Cercospora leaf spot were determined thorough field test.[Result] The treatments of 43％ Tebuconazole suspending agents 800 times liquid spray,25％ Azoxystrobin suspending agents 800 times liquid spray,43％ Tebuconazole suspending agents 500 times liquid seed soaking 2 hours ＋ 43％ Tebuconazole suspending agents 800 times liquid spray and 25％ Azoxystrobin suspending agents 500 times liquid seed soaking 2 hours ＋ 25％ azoxystrobin suspending agents 800 times hquid spray showed obvious control efficiency against mung bean Cercospora leaf spot,and their control effects were more than 80％ for three times drug application after 28 days.Furthermore the treatments could improve yield of bean.So it was recommended to popularization and application in production.[Conclusion] The research result provides theoretical basis for chemical control of mung bean Cercospora leaf spot.