小麦霜霉病在我市发生由于去年冬暖，加之今年入春以来，阴雨天气多，田间湿度大和菌源基数的影响，导致今年我市部分麦田发生小麦霜霉病。１症状：植株明显矮化，叶片淡绿并出现明显的黄白色条纹。叶片显著变宽变长，柔软披垂，有时绉褶或扭曲，心叶则呈黄白色。植株高... Wheat downy mildew occurred in our city due to the warm winter last year, combined with the spring of this year, more rainy days, field humidity and the impact of bacterial origin, leading to some wheat fields in our city this year, wheat downy mildew. 1  Symptoms: plants dwarfed, green leaves and obvious yellow-white stripes. Leaves significantly wider and longer, soft drape, sometimes wrinkled or twisted, heart leaves are yellow-white. Plant height ...