The results showed that prochloraz-manganese chloride complex and difenoconazole had the best toxicity and EC50 were 0.

• 采用生长速率法测定8种杀菌剂对甜瓜黑斑病菌的毒力,结果表明咪鲜胺锰盐和苯醚甲环唑的毒力最高,其EC50分别为0。