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为开发出更多对葡萄霜霉病有特效的农药制剂复配组合,延缓霜霉病的抗药性,在一段时间内彻底解决抗性霜霉病,并帮助农户丰收增产,我们进行几种农药制剂防治‘巨峰’葡萄霜霉病大面积田间药效对比试验,试验中与目前国内流行的优秀药剂进行广泛对比。结果表明,在每667 m2用水量45 kg情况下,70%烯酰吗啉·嘧菌酯水分散粒剂450 g/hm2(制剂)对‘巨峰’葡萄霜霉病最佳防效达到73.7%,基本与250 g/L吡唑醚菌酯EC(凯润)360 ml/hm2(制剂)71.3%最佳防效相当;并且显著优于50%嘧菌酯水分散粒剂(阿米西达)225 g/hm2(制剂)38.6%最佳防效、30%苯醚甲环唑·嘧菌酯悬浮剂450 ml/hm2(制剂))57.9%最佳防效和325 g/L苯醚甲环唑·嘧菌酯悬浮剂(阿米妙收)450 ml/hm2(制剂))61.4%最佳防效。通过该试验,我们筛选出一些有价值的组合,为更好地防治葡萄抗性霜霉病提供技术支持。
In order to develop more pesticide formulation combinations that have specific effects on grape downy mildew, to delay the resistance of downy mildew, to completely eliminate the resistance to downy mildew and to increase the yield of farmers in a period of time, we conducted several pesticides Preparation of ’Kyoho’ grapes downy mildew large area field efficacy comparison test, the experiment with the current popular domestic excellent contrast for a wide range of drugs. The results showed that the optimal control effect of 70% dimethomyl azoxystrobin water dispersible granules 450 g / hm2 on the ’Jufeng’ grape downy mildew reached 73.7% under the condition of 45 kg water per 667 m2. , Which was almost equivalent to that of the control with 250 g / L pyraclostrobin EC (Kai Run) 360 ml / hm2 (formulation) 71.3%, and was significantly better than 50% azoxystrobin water dispersible granules ) 225 g / hm2 (Formulation) 38.6% Optimal Control, 30% Difenoconazole Azoxystrobin Suspension 450 ml / hm2 (Formulation)) 57.9% Optimal Control and 325 g / L Phenylether A Cycloconazole azoxystrobin suspension (Ami Miao) 450 ml / hm2 (preparation)) 61.4% Best anti-efficacy. Through this experiment, we screened out some valuable combinations to provide technical support for better control of grape-resistant downy mildew.