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1983～1991年的研究表明,白粉病菌主要在凉爽阴湿的沿山地区自生麦苗上越夏;夏季多雨凉爽年份,在平原秋作物覆盖地自生麦苗上偶尔也有零星白粉病发生。浸染自生麦苗的菌源,主要是夏季存活期内的有性世代,病残体上的分生孢子无作用。自生麦苗上的分生孢子,是侵染冬麦秋苗的来源;12月上旬停止侵染。秋苗上的菌丛,12月上旬停止产孢,下旬菌丝停止生长,以菌丝主要在茎基叶鞘上越冬;2月上旬菌丝复苏,3月份是病害开始发展期,4月份是普发期,5月份是盛发期;春季病情与雨量、雨日密切相关。
Studies from 1983 to 1991 showed that powdery mildew was mainly found in the summer over the cool and wet mountainous wheat seedlings; and in the cool summer months, scattered sporadic powdery mildew was occasionally found on the self-grown wheat seedlings covered by autumn crops in the plain. Bacterial sources of digested autotrophic wheat seedlings are mainly sexual seasons during summer seasons, and conidia on diseased bodies have no effect. Conidiophores on the spontaneous wheat seedlings are the source of the winter wheat seedlings that infest the winter wheat; Infestation stopped in early December. Autumn seedlings on the flora, stop sporming in early December, late hyphae stop growing, with mycelium in the stem-based sheath of the winter; mycelium recovery in early February, March is the disease began to develop in April is Pu Hair period, May is Shengfa period; spring condition and rainfall, rainy day are closely related.