大棚、温室种植黄瓜产量高、品质好、上市早,是一项很好的庭院经济。但大棚、温室黄瓜易感多种病害,其中以细菌性角斑病和霜霉病为多,而且较难辨别。介绍几种辨别方法,供生产中选用,以便对症下药。 1.角斑病属于细菌感染的病害,而霜霉病是由真菌引起的病害,且流行速度快,在高温、高湿情况下,三天就能使大部分植株染病。 2.清晨有露水时观察黄瓜叶,背面有暗绿色斑块,且较大,有的连片的,是霜 Greenhouses, cucumber cultivation in greenhouse high yield, good quality, early market, is a good courtyard economy. However, greenhouses, greenhouse cucumber susceptible to a variety of diseases, of which bacterial angular disease and downy mildew are more difficult to distinguish. Describe several methods of identification for the production of choice, so that the right medicine. 1. Corner spot disease is a bacterial infection, and downy mildew is a disease caused by fungi, and the prevalence of rapid, high temperature and high humidity, three days will make most of the plants infected. 2. morning when the dew observed cucumber leaves, the back of dark green patches, and larger, and some contiguous, is cream