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对禾草云斑病病原菌形态及生物学特性的研究表明，其病原菌菌落铺展，菌丝白色，产孢细胞直接从菌丝生出，分生孢子梗缺，圆筒形，双孢１０～２０×２．５～５μｍ，孢子顶细胞具有锐角或直角向的喙状突起。菌丝生长温度范围６～３９℃，最适温度２４℃，孢子萌发温度范围６～３６℃，最适温度２４℃；菌丝和孢子在温度达７０％以上均可萌发，并随湿度升高菌落铺展扩大，孢子萌发率升高，在水滴处理中孢子萌发率最大；不同光照处理均可促进菌丝生长，但差异不显著，光暗处理有利于孢子萌发，连续光照、黑暗均不利于菌丝生长和孢子萌发；菌丝生长ｐＨ值范围为２．５～７．５，最适ｐＨ值３．５～４，孢子萌发ｐＨ值为２．５～７．５，最适ｐＨ值为４。
The morphological and biological characteristics of the pathogen of Graminella occidentalis showed that the colonies of pathogenic bacteria spread and the mycelium was white. The sporulation cells were directly produced from the mycelia. The conidiophores were lacking, cylindrical and 10 ~ 20 × 2.5 ~ 5μm, apical apical cells with acute or right-angle beak-like protrusions. The mycelial growth temperature ranged from 6 ℃ to 39 ℃, the optimum temperature was 24 ℃, the spore germination temperature ranged from 6 ℃ to 36 ℃, and the optimum temperature was 24 ℃. The hyphae and spores germinated at more than 70% The spore germination rate increased with the expansion of colonies, and the spore germination rate was the highest in water droplet treatment. Different light treatments could promote the mycelium growth, but the difference was not significant. The light and dark treatment was conducive to spore germination, continuous light and dark were not conducive to the bacteria Silk growth and spore germination. The mycelial growth pH ranged from 2.5 to 7.5, the optimum pH ranged from 3.5 to 4, the spore germination pH ranged from 2.5 to 7.5, and the optimum pH value was 4 .