黄瓜细菌性角斑病和霜霉病是黄瓜上的两种常发性病害,发病初期症状均呈水渍状斑点,扩大后受叶脉限制出现多角形病斑。由于两病症状相似,有时又同时发生,给防治造成了混乱,因此正确识别两病是准确及时防治的关键。下面就将两种病害的主要区别及防治方法介绍如下: Cucumber bacterial angular leaf spot and downy mildew are two common diseases on cucumber. The initial symptoms are waterlogging-like spots. After enlarged, polygonal lesions are restricted by the veins. As the two symptoms are similar and sometimes happen at the same time, it has caused confusion in prevention and treatment. Therefore, correctly identifying the two diseases is the key to accurate and timely prevention and treatment. The following will be the main difference between the two diseases and prevention methods are described below: