由Cercospora canescens引起的叶斑病是绿豆上的一个重要病害,在我国绿豆产区安徽、河南等地在开花结荚期常造成大量落叶,致使严重减产或失收。1982～1984年对各地采集的标样进行了分离培养及单孢子离菌cd83—002的理化特性等方面的研究结果表明:经PDA培养的纯菌株在高梁米培养基上扩大培养,可产生大量分生孢子。孢子形成的数量与温度相 Sick leaf spot caused by Cercospora canescens is an important disease on mung bean. In mung bean producing areas of Anhui, Henan and other places, lots of deciduous leaves often occur during flowering and podding, leading to serious yield loss or loss. From 1982 to 1984, the standard samples collected from different places were isolated and cultured, and the physical and chemical properties of the single-spore isolates cd83-002 were studied. The results showed that the pure strains cultured on PDA were expanded on the sorghum rice medium and could produce a large amount of Conidia. The number of sporulation and temperature phase