近年来,日光温室黄瓜霜霉病和细菌性角斑病发生危害日趋严重,由于两病发生期症状相似,不易区分,致使用药不当,助长病害流行,损失惨重。 一、症状区别 黄瓜霜霉病,是由真菌侵染引起的,俗称“跑马干”。主要侵染叶片。发病叶片初呈水渍 In recent years, the greenhouse greenhouse cucumber downy mildew and bacterial angular leaf spot disease become increasingly serious harm, due to the occurrence of the two symptoms are similar, not easy to distinguish, resulting in improper use of medicines, contributing to disease epidemic, suffered heavy losses. First, the symptoms of cucumber downy mildew disease is caused by fungal infections, commonly known as “horse race.” The main infection leaves. The incidence of early leaves showed water stains