黄瓜细菌性角斑病的防治黄瓜细菌性角斑病在黄瓜产区均有发生，是黄瓜生产上的重病害，此病主要危害叶片、叶柄、卷须和瓜条，有时也侵染茎。苗期至成株期均可受害。子叶染病，初呈水浸状、近圆形凹陷斑；真叶染病，初为鲜绿色水浸状斑，渐变淡褐色。病斑扩大受叶脉限制呈... Cucumber bacterial angular leaf disease prevention and control Cucumber bacterial angular leaf disease occurred in the cucumber production areas are cucumber production of the major diseases, the disease mainly endanger the leaves, petioles, tendrils and melon, and sometimes infected stems. Seedling to adult stage can be affected. Cotyledonary disease, was initially flooded, nearly circular depression spot; true leaf disease, the beginning of the fresh green flooding plaques, pale brown gradient. Lesion expansion is limited by the veins was ...