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近年来,在黄瓜的温室栽培中霜霉病发生严重。一般减产10％～30％,重者减产50％以上,甚至绝收。1994～1995年连续两年在离石县城关镇风山底村张邦清的两个温室内对早春黄瓜进行了实地观察、比较研究,发现霜霉病的发生与叶面水膜的
In recent years, downy mildew in greenhouse cultivation of cucumber serious. The general reduction of 10% to 30%, heavy reduction of more than 50%, or even absolute. From 1994 to 1995, the early spring cucumber was observed and compared in two greenhouses of Zhang Bangqing in Fengshan Village, Chengguan Town, Chengguan Town, Lishi County for two consecutive years. The comparative study showed that the occurrence of downy mildew was related to the leaf water film