【摘要】 分离鉴定草莓红中柱根腐病病原，测定杀菌剂对该病原菌菌丝生长的抑制效果，为草莓红中柱根腐病的田间防治提供参考。从玉溪市红塔区草莓种植田采集草莓红中柱根腐病标样，分离鉴定草莓红中柱根腐病的病原菌，采用菌丝生长速率法测定10种杀菌剂对该病原菌菌丝生长的抑制效果。结果表明，引起红塔区草莓红中柱根腐病的病原菌为胶孢炭疽菌种复合群中的暹罗炭疽菌（Colletotrichum siamense）。10种杀菌剂对该病原菌菌丝生长都有一定的抑制作用，咪鲜胺对草莓红中柱根腐病菌菌丝生长的抑制活性最强，EC₅₀为0.065 5 mg/L,其次是咪鲜胺锰盐和苯醚甲环唑，EC₅₀分别为0.141 4和6.560 mg/L,抑菌效果最差的是醚菌酯，EC₅₀为30 483 mg/L。更多还原

【Abstract】 To isolate and identify the pathogen of strawberry red stele root rot, and to determine the inhibitory effect of fungicides on the mycelial growth of the pathogen, so as to provide reference for the field control of strawberry red stele root rot.The pathogen of strawberry red stele root rot was isolated and identified from strawberry fields in Hongta District of Yuxi City, the inhibition effects of 10 fungicides on the hypha growth of the pathogen were determined by mycelial growth rate method.The result showed that Colletotrichum siamense was the pathogen causing strawberry red stele root rot in Hongta District. All the 10 fungicides had some inhibitory effects on the mycelial growth of this disease. Prochloraz had the strongest inhibitory activity on the mycelial growth of strawberry anthracnose, EC₅₀ was 0.065 5 mg/L, followed by prochloraz manganese salt and difenoconazole, EC₅₀ were 0.141 4 and 6.560 mg/L, respectively. Kresoxim-methyl was the worst, EC₅₀ was 30 483 mg/L.更多还原