小麦雪腐叶枯病Fusarium nivale(Fr.)Ges.是青海省东部川水、脑山地区麦田中、后期发生的一种重要病害,近年来逐渐加重。发病率一般70—80％,个别品种如“高原338”春小麦发病率在90％以上;损失率在10—13％左右,已成为小麦育种和高产栽培的限制因子。本文仅就该病害在高原生态环境下的发生流行与几个气象因素之间的关系作初步研究,现将结果报导如下: 材料和方法 材料:1983—1984两年间,于春小麦灌浆——乳熟阶段(即小麦雪腐叶枯病发病高峰期)对民和、乐都、西宁市、湟源、格尔木市、贵德等全省8县2市14个地区大田 Fusarium nivale (Fr.) Ges. Is one of the most important diseases in late and late stage of Chuanshui and Beishan wheat fields in eastern Qinghai Province and has been gradually aggravating in recent years. The incidence is generally 70-80%, and the incidence of spring wheat in individual varieties such as “Plateau 338” is over 90%; the loss rate is about 10-13%, which has become a limiting factor for wheat breeding and high-yielding cultivation. This article only on the disease in the plateau ecological environment prevalence and several meteorological factors between the preliminary study, the results reported as follows: Materials and methods Materials: 1983-1984 two years, in spring wheat grouting - milk cooked Stages (ie, the peak incidence of wheat snowy leaf blight) to Minhe, Ledou, Xining, Huangyuan, Golmud City,