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用50%烯酰吗啉·嘧菌酯悬浮剂800倍液、1 000倍液和1 500倍液防治葡萄霜霉病,药后14 d,对葡萄霜霉病的防治效果分别是79.24%、90.89%和91.75%,对照药剂25%嘧菌酯悬浮剂1 000倍液对葡萄霜霉病的防治效果是64.79%。试验结果表明,50%烯酰吗啉·嘧菌酯悬浮剂可有效防治葡萄霜霉病,药效明显高于对照药剂25%嘧菌酯悬浮剂,建议在葡萄霜霉病发生初期用1 000倍液对叶面均匀喷雾。
The fungicide against grape downy mildew was treated with 800% dimethomorph and azoxystrobin 800 times, 1000 times and 1 500 times, respectively. The control effect on grape downy mildew was 14.24% 90.89% and 91.75%, respectively. The control effect of control agent 25% Azoxystrobin 1000 times on grape downy mildew was 64.79%. The results showed that 50% dimethomyl azoxystrobin suspension was effective in controlling grape downy mildew and its efficacy was significantly higher than that of the control 25% azoxystrobin. It is suggested that 1 000 Times the liquid on the foliage spray evenly.