分生孢子萌发的温度范围为0～30℃,培养6小时发芽率达90％以上的温度为20℃,培养12小时的有5、10、15℃。菌丝生长的温度范围为0～25℃,生长最快的温度有15、20、10℃,培养在30℃的不生长。空气相对温度100％的和浸没在水滴中的分生孢子萌发良好,相对湿度在90％以下的不萌发。孢子萌发的PH值范围很广。植株从苗期到鳞茎膨大期均可发病,在整个发病过程中出现两个高峰期,病害衰退期出现在鳞茎膨大时期。 Conidia germination temperature range of 0 ~ 30 ℃, 6 hours of culture germination rate of 90% or more of the temperature was 20 ℃, cultured for 12 hours with 5,10,15 ℃. Mycelial growth temperature range 0 ~ 25 ℃, the fastest growing temperature of 15,20,10 ℃, the culture does not grow at 30 ℃. The relative humidity of 100% and the air immersed in the droplets of conidia germination, relative humidity less than 90% of the germination. Spore germination PH value range. Plants from the seedling to the bulbar bulimia can be disease, in the course of the incidence of two peaks, the disease decline in the bulb bulging period.