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黄瓜细菌性角斑病近年来在温室、大棚及露地田发生普遍且严重 ,严重的病株率达 80 %,对产量和品质影响很大。一、症状特点 :细菌性角斑病主要为害叶片、叶柄和果实 ,有时也侵染茎。叶片染病时 ,初为鲜绿色水浸状斑 ,后变淡褐色、灰色或黄褐色 ,病斑受叶脉限制呈多角形 ,湿度大
Cucumber bacterial angular leaf spot in recent years in the greenhouse, greenhouses and open field occurred widespread and serious, severe disease rate of 80%, yield and quality of great influence. First, the symptoms and signs: Bacterial angular leaf spot damage mainly leaves, petioles and fruits, and sometimes infected stems. When the leaves were infected, they were initially emerald-covered and then changed to light brown, gray or yellowish brown. The lesion was polygonal with the restriction of the veins. The humidity was high