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为寻求防治葡萄霜霉病的替代药剂,笔者选用60%霜脲·嘧菌酯水分散粒剂与常规药剂品种进行了药效对比试验。试验田块常年霜霉病发生较重。60%霜脲·嘧菌酯水分散粒剂设3个浓度处理,分别为1200倍液、1500倍液、2000倍液。对照药剂处理为10%氰霜唑悬浮剂2500倍液和72%霜脲·锰锌可湿性粉剂1000倍液。每亩用水量均为100公斤。在葡萄幼果期首次施药,隔10天一次,连续喷施4次。第三次施药后14天调查各处理防效,60%霜脲·嘧菌酯水分散粒剂1200倍液和1500倍液相近,分别为88.54%、
In order to find an alternative medicine to prevent and control grape downy mildew, the author selected 60% cream urea azoxystrobin water dispersible granules and conventional pharmaceutical varieties for efficacy comparison test. Perennial test mildew mildew occurred heavier. 60% cream urea azoxystrobin water dispersible granules were set at three concentrations, respectively, 1200 times, 1500 times, 2000 times. The control agent was treated with 2500 times of 10% cyadoxazole suspension and 1000 times of 72% sodium thiourea wettable powder. Water consumption per mu is 100 kg. The first application of grapes in young fruit, once every 10 days, four consecutive spraying. Fourteen days after the third application, the control effects of each treatment were investigated. The results showed that 60% cream urea azoxystrobin water dispersible granules were similar to 1200 times and 1500 times liquid, respectively, 88.54%