霜霉病是温室大棚黄瓜的主要病害 ,是影响黄瓜高产优质的主要原因。单纯的化学防治 ,难以达到良好的效果 ,因此 ,防治上要在选用抗病品种的基础上采用栽培与生控配套、物理与化学防治相结合的综合防治模式。1　改善田间小气候1采用膜下沟灌、以降低棚内空气的湿度。2塑料膜要选 Downy mildew is the main disease of greenhouse cucumber, cucumber is the main reason for high yield and quality. Simple chemical control, it is difficult to achieve good results, therefore, prevention and control should be based on the selection of resistant varieties using cultivation and biological control, physical and chemical control combined with a comprehensive prevention and control mode. 1 to improve the microclimate field 1 using furrow irrigation to reduce the humidity of the shed air. 2 plastic film to be selected