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选用50%烯酰吗啉·嘧菌酯悬浮剂用药量1500倍液、1000倍液、800倍液防治葡萄霜霉病,药后14d的防效分别是79.24%、90.89%、91.75%,对照药剂25%嘧菌酯悬浮剂1000倍液药后14d的防效是64.79%。试验表明,50%烯酰吗啉·嘧菌酯悬浮剂可有效防治葡萄霜霉病,防治葡萄霜霉病药效明显高于对照25%嘧菌酯悬浮剂,建议使用浓度为1000倍液,于葡萄霜霉病发生初期对叶面均匀喷雾。
50% dimethomyl azoxystrobin suspending agent was used to control grape downy mildew at dose of 1500, 1000 and 800. The control effect of 14 days after treatment was 79.24%, 90.89% and 91.75% Pharmacy 25% Azoxystrobin 1000 times liquid medicine after 14d control effect is 64.79%. Experiments show that 50% dimethomyl azoxystrobin suspension can effectively prevent and control grape downy mildew, the efficacy of grape downy mildew control was significantly higher than the control 25% azoxystrobin suspension, it is recommended to use a concentration of 1000 times, Spray leaf foliage evenly in the early stage of grape downy mildew.