[目的]评价20％咪鲜胺水乳剂对香蕉炭疽病的防治效果及对作物的安全性.[方法]于2010 ～2011年研究了3个浓度的20％咪鲜胺水乳剂处理对香蕉炭疽病的防治效果.[结果]20％咪鲜胺水乳剂有效成分量在333.3 ～ 500.0 mg/kg时可有效防治香蕉炭疽病,20％咪鲜胺水乳剂有效成分量为333.3、500.0 mg/kg时和对照药剂25％咪鲜胺水乳剂有效成分量为333.3 mg/kg时对香蕉炭疽病的防治效果无显著差异,但三者的防治效果均显著高于20％咪鲜胺水乳剂有效成分量为250.0 mg/kg时,且在供试剂量下对香蕉植株生长无致害性影响.[结论]20％咪鲜胺水乳剂可作为香蕉炭疽病的轮换用药,推荐其有效成分量为333.3～500.0 mg/kg.%[Objective] The aim was to evaluate the control effect of20％ Prochloraz EW on controlling banana anthracnos and safety to crops.[Method] Control effects of 20％ Prochloraz EW at three concentrations on banana anthracnos were studied from 2010 to 2011.[Result] The 20％ Prochloraz EW at 333.3-500.0 mg/kg could control banana anthracnos effectively; there were no significant difference in the control effects of 333.3 and 500.0 mg/kg 20％ Prochloraz EW and 333.3 mg/kg contrast agent 25％ Prochloraz EW on banana anthracnos,but the control effects of above three groups were significantly higher than that of 250 mg/kg 20％ Prochloraz EW; 20％ Prochloraz EW had no harmful effect on the banana fruit.[Conclusion] 20％ Prochloraz EW could be applied on rotation use to control banana anthracnos,and its application dose of effective component was 333.3-500.0 mg/kg at the beginning of disease occurrence.
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