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[目的]探讨50%嘧菌酯·锰锌水分散粒剂对马铃薯晚疫病的防治效果。[方法]选择50%嘧菌酯·锰锌水分散粒剂及当前大面积使用的杀菌剂58%甲霜·锰锌粉剂作为供试药剂,设6个处理,探讨50%嘧菌酯·锰锌水分散粒剂的不同剂量对马铃薯晚疫病的防治效果。[结果]50%嘧菌酯·锰锌水分散粒剂800倍液是马铃薯晚疫病防治的首选药物之一。其防治效果最佳,达到76.02%,马铃薯产量最高,达到21 648.0 kg/hm2。从发病初期开始施药,每7 d施用1次,连续施用3~4次效果最佳。[结论]研究结果为减轻晚疫病对马铃薯的危害,以及指导当地马铃薯晚疫病的防治工作提供了参考。
[Objective] The research aimed to discuss the control effect of 50% azoxystrobin and manganese-zinc water dispersible granules on potato late blight. [Method] 50% azoxystrobin-manganese-zinc water-dispersible granules and the currently used bactericide 58% metalaxyl-manganese-zinc powder as the test agents were selected. Six treatments were conducted to investigate the effect of 50% azoxystrobin Effect of Different Dosages of Zn - dispersible Granules on Potato Late Blight. [Result] The 50% azoxystrobin and manganese-zinc water dispersible granule 800 times liquid was one of the preferred drugs for prevention and control of potato late blight. The control effect is the best, reaching 76.02%, the highest potato yield, reaching 21 648.0 kg / hm2. Application from the early onset of disease, administered once every 7 d, continuous application of 3 to 4 times the best. [Conclusion] The results provided reference for alleviating the harm of late blight to potato and guiding the local prevention and cure of potato late blight.