为探明兰州百合褐腐病相关真菌和卵菌种类，于2013年秋季在兰州百合主产区采集罹病百合鳞茎标样，采用真菌常规组织分离法，对522个病样(块根、根盘和鳞片)组织进行了分离，共分离得到574株真菌和卵菌，真菌和卵菌分出率达109.96%；分离得到的真菌和卵菌可归于6个属，其中土赤壳属(Ilyonectria)、镰刀菌属(Fusarium)和丝核菌属(Rhizoctonia)的分离频率分别为46.86%、32.23%和17.07%，为优势菌群；3个优势菌群的占比因分离部位、采样地块而明显不同。

In order to investigate the related fungi and Oomycota corresponding to brown rot of Lanzhou lily， disease samples were collected from main planting locations of Lanzhou lily in Gansu in the fall of 2013. Fungi and Oomycota were isolated from 522 tissue pieces of diseased roots， basal plates， and scales by normal fungus tissue isolation method. A total of 574 strains of fungi and Oomycota were isolated， with an isolation rate of fungi and Oomycota of 109.96%. As a result of morphological identification， 6 genera were obtained， of which isolation frequency of Ilyonectria， Fusarium and Rhizoctonia amounted to 46.86%，32.23% and 17.07% respectively， as the dominant population in the total isolated fungi. The proportion of the 3 dominant bacteria groups is obviously different because of the separation site and the sampling plot.

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国家农产品质量安全风险评估基金项目(GJFP2013-201701002)；甘肃省农业科技创新项目(GNCX-2014-34)。