大小麦霜霉病[Sclerophthora macrospra(Sacc.)Thirum et al.]发病后,植株明显矮化,分蘖增多,叶片淡黄,基部叶脉有皱纹,剑叶肥大或扭曲发皱,穗部常畸形呈龙头状,病穗下部小穗的颖壳呈叶状变态,重病穗不结实。该病在本地常有发生,特别是在低洼易涝地区的田块上常年可出现。为此,我们在 After the onset of Sclerophthora macrospra (Sacc.) Thirum et al., The plants were apparently dwarfed, with more tillers, yellow leaves, with wrinkles in the basal veins, hypertrophy or warped folds, Faucet-like, spikelets lower ear spikelet was leaf-shaped metamorphosis, seriously ill ear is not strong. The disease often occurs locally, especially in low-lying areas prone to flood prone plots. For this, we are here