安徽省玉米小斑病菌对5种杀菌剂的敏感性

为明确安徽玉米小斑病菌对常用杀菌剂的敏感性现状，从安徽省的主要玉米产区分离到9个代表性玉米小斑病菌菌株，采用生长速率法测定其对常用5种杀菌剂的敏感性。结果表明，玉米小斑病菌对百菌清、烯唑醇、腐霉利敏感性较高，其EC50分别为0.734 2~13.091 8、0.0106~4.2580μg/mL和0.1406~76.8063μg/mL，且不同菌株之间对同一种药剂的敏感性差异较大；甲基硫菌灵和多菌灵对玉米小斑病菌的抑制作用不明显。

Sensitivity of Bipolaris maydis to five fungicides in Anhui Province

To confirm the sensitivity of Bipolaris maydis to major fungicides,9 strains of Bipolaris maydis were isolated from maize plants located at different region in Anhui.The sensitivities of 9 strains to 5 fungicides were measured by the growth rate.The results showed that the isolates were sensitive to chlorothalonil,diniconazole and procymidone,the EC50 values of which ranged from 0.734 2-13.091 8 mg/mL,0.010 6-4.258 0 mg/mL and 0.140 6-76.806 3 mg/mL,respectively.There were variations in sensitivities to the...