6种杀菌剂对西瓜炭疽病的防效试验

Efficacy Test of Six Fungicides on Controlling Anthracnose of Bitter Gourd

采用6种杀菌剂对西瓜炭疽病进行田间药效试验。3次药后试验结果表明:50%咪鲜胺锰盐可湿性粉剂和25%吡唑醚菌酯乳油效果最好,防效在73%以上;10%苯醚甲环唑水分散粒剂和25%溴菌腈可湿性粉剂防效次之,防效在67%以上;50%多菌灵可湿性粉剂和80%代森锰锌可湿性粉剂防效较差,防效为50%左右。药剂处理后,50%咪鲜胺锰盐可湿性粉剂、25%吡唑醚菌酯乳油和对照,中心可溶性固形物含量分别为11.8%、12.0%、9.8%;两种药剂比对照分别增产30.96%、28.26%,增产效果显著。因此,推荐50%咪鲜胺锰盐可湿性粉剂和25%吡唑醚菌酯乳油为目前防治西瓜炭疽病的理想药剂。

Six fungicides was used on Watermelon Anthracnose to evaluate the field control efficiency. The results showed that, prochloraz-manganese chloride complex and pyraclostrobin possessed the best control effects, with their control efficiency higher than 73%; and difenoconazole and bromothalonil had relatively better control effects, with their control efficiency higher than 67%; while carbendazim and mancozeb had the relatively worse control effect, with the control efficiency around of 50%. After chemical treatment, prochloraz-manganese chloride complex, pyraclostrobin and the control（CK）, soluble solids content was respectively 11.8%, 12.0%, 9.8%, while their yield was 30.96% and 28.26% higher than that of the control. Therefore, prochloraz-manganese chloride complex and pyraclostrobin were the ideal fungicides for controlling Watermelon Anthracnose.