近两年种植的黄瓜,病害发生非常普遍,防治黄瓜常见病害,可通过四步来做。第一步是判断黄瓜是否发病。首先从植株外部的反常表现来看,从植株外部或果实的发病症状来判断是什么病害,还要确认所发生的病害是生理性病害还是传染性病害。一般生理性病害的特点是发生面积大,发病时间一致,但是并不传染。传染性病害发生特点是个别植株发病,发病时间有先有后。 Cucumbers planted in the past two years, disease is very common, common diseases of cucumber can be done through four steps. The first step is to determine whether the incidence of cucumber. First of all, from the abnormal appearance outside the plant, judging from disease symptoms outside the plant or fruit, what disease is to be confirmed, and confirming whether the disease occurred is a physiological disease or an infectious disease. General physiological disease is characterized by the occurrence of large area, the same onset time, but not contagious. Occurrence of infectious diseases is characterized by the incidence of individual plants, the onset time of prior.