Objective] The aim was to explore the field efficacy of berberine (BBR WP) in preventing and controlling strawberry powdery mil-dew,as well as fungicide application dosage and method.[Method] With 50%azoxystrobin diluted 3 000 times as positive control,the randomized block design involved treatments:10% BBR WP diluted 800 times,1 200 times,and 1 600 times.10% BBR WP was sprayed for a total of three times,the time interval was 7 and 10 days,respectively.[Result]The results showed that 10% BBR WP significantly reduced the incidence of strawberry powdery mildew,and the efficacy was comparable to that of azoxystrobin.For highly infected strawberry,10%BBR WP diluted 800-1 200 times with 7d time interval application exhibited highest efficacy .Under identical conditions,10%BBR WP showed shorter period of inhibi-tion efficacy relative to azoxystrobin.For preventing strawberry powdery mildew,10%BBR WP diluted 1 200-1 600 time with 12 d time interval application gave striking inhibition efficacy.[Conclusion] 10%BBR WP is effective,safe and can be a promising natural fungicide in management of strawberry powdery mildew.%[目的]探索新型小檗碱对草莓白粉病的预防和治疗作用及其田间施药剂量和方法。[方法]以50％醚菌酯水分散粒剂稀释3000倍为阳性对照，采用随机区组设计研究10％小檗碱（ BBR）可湿性粉剂稀释800、1200和1600倍喷药3次，喷药间嘧隔7和12 d对红颜草莓白粉病的防治效果及对草莓的安全性。[结果]10％BBR 对草莓白粉病具有较好的预防和治疗作用，且防效与醚菌酯无明显差别。对于发病严重的草莓白粉病，喷药间隔7 d，稀释800～1200倍防效较佳，在相同试验条件下BBR的防效期较醚菌酯短。预防用药以施药间隔12 d、稀释1200～1600倍为宜。[结论]10％BBR可湿性粉剂对草莓安全、有效，可作为防治草莓白粉病的天然杀菌剂。
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