黄瓜霜霉病是棚（室）栽培的常见病害 ,尤其在冀西北早春茬栽培中 ,常常由于棚（室）通风和保温的矛盾 ,造成棚内湿度过大 ,导致该病的严重发生。为进一步探索棚（室）黄瓜霜霉病生态防治技术 ,近年来赤城县农业局通过试验总结出一套有效生态防治方法 ,经推广后深受广大菜农的 Cucumber downy mildew is a common disease of shed (room) cultivation, especially in early spring crop cultivation in northwestern Hebei, often due to the contradiction between the shed (room) ventilation and insulation, resulting in excessive humidity in the shed, resulting in the serious occurrence of the disease. In order to further explore the shed (room) cucumber downy mildew ecological control technology, in recent years Akagi County Bureau of Agriculture concluded through experiments a set of effective ecological control methods, by the promotion of the majority of farmers