近来年,随着蔬菜生产规模的不断发展,黄瓜细菌性角斑病的发生也日趋严重,成为黄瓜的重要病害之一,露地和保护地都有发生,露地黄瓜7—8月多雨季节发病较重,温室大棚栽培黄瓜以春末夏初发病重。同时,由于黄瓜细菌性角斑病的症状类似黄瓜霜霉病,所以防治上易混淆,造成严重减产,因此应注意识别与防治。一是症状。黄瓜细菌性角斑病主要危害叶片、也能危害瓜条和茎蔓。幼苗期发病,在子叶上产生圆形或卵圆形水浸状凹陷病斑,微带黄褐 In recent years, with the continuous development of vegetable production scale, the incidence of bacterial angular leaf spot disease in cucumber is also becoming more and more serious. It has become one of the important diseases of cucumbers. Both open field and protected areas have occurred. The incidence of open-field cucumbers in rainy seasons from July to August Heavy, greenhouse cucumber cultivation in late spring and early summer onset heavy. At the same time, due to the symptom of cucumber angular leafhopper similar to cucumber downy mildew, so the control easy to confuse, resulting in serious loss of production, it should pay attention to identification and prevention. First, the symptoms. Cucumber bacterial angular leaf disease main hazards leaves, but also endanger the melon and stems and vines. Seedling incidence, in the cotyledons produced round or oval-shaped dimple-like depression lesion, yellowish brown