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霜霉病是保护地黄瓜上普遍发生的一种真菌性叶部病害。多年的生产实践证明，充分利用保护地环境的可控性，合理运用农业防治技术，能有效地控制黄瓜霜霉病的发生为害。这是无公害黄瓜生产主要技术之一。１保护地黄瓜霜霉病的主要发病因素１．１黄瓜品种黄瓜品种间抗病性差异较?
Downy mildew is a common fungal foliar disease that occurs on cucumber cucumbers. Years of production practice has proved that making full use of the controllability of the protected areas and the rational use of agricultural control technologies can effectively control the occurrence of cucumber downy mildew. This is one of the main pollution-free cucumber production technology. 1 protection of cucumber downy mildew main risk factors 1.1 cucumber varieties cucumber varieties of disease resistance differences?