大麦黄花叶病主要发生在长江下游流域的鄂、浙、苏、沪、皖等省市,其中以江苏、浙江、上海等地发病较重。病株提前枯死,导致大麦成穗率降低、结实率明显减少、千粒重降低、出粉率降低以及品质下降。 Barley yellow mosaic disease occurs mainly in Hubei, Zhejiang, Jiangsu, Shanghai, Anhui and other provinces and cities in the lower reaches of the Yangtze River, of which the incidence is heavier in Jiangsu, Zhejiang and Shanghai. Premature death of diseased plants, leading to reduced barley heading rate, significantly reduced seed set, reduced grain weight, reduced flour yield and quality decline.