几种药剂对芝麻叶部病害的防治效果

Control Effect of Several Fungicides against Sesame Leaf Diseases

采用10%苯醚甲环唑水分散粒剂、30%己唑醇悬浮剂、25%戊唑醇可湿性粉剂、400 g/L氟硅唑乳油、15%三唑酮可湿性粉剂、40%嘧霉胺悬浮剂、70%甲基硫菌灵可湿性粉剂、250 g/L嘧菌酯悬浮剂、80%异菌脲可湿性粉剂9种药剂对芝麻进行喷雾处理,在施药后7 d和14 d分别调查病情指数和防治效果。根据2次调查结果推荐在芝麻主产区、重病区使用30%己唑醇悬浮剂2 500倍液或250 g/L嘧菌酯悬浮剂1 000倍液喷雾防治叶部病害为宜。

Nine fungicides such as 10% difenoconazole WG, 30% hexa- conazole SC, 25% tebuconazole WP, 400 g/L flusilazole EC, 15% triadimefon WP, 40% pyrimethanil SC, 70% thiophanate-methyl WP, 250 g/L azoxystrobin SC, 80% iprodione WP were sprayed to sesame, the disease index and control effect were investigated on 7 days and 14 days after spraying. Accord- ing to the results of two surveys, it was suitable to use 2 000 times solution of 30% hexaconazole SC and 1 000 times solution of 250 g/L azoxystrobin SC in the main sesame producing areas and serious leaf diseases areas.