近年来,随着保护地发展,黄瓜霜霉病为害越来越严重。,根据我们调查,一茬黄瓜打化学农药8～12次,个别的达14～15次。黄瓜成本高,而且残毒残留严重。为了改变这种被动局面,我们研究了黄瓜霜霉病的发生条件及新的防治手段,取得了初步成效,现小结如下。 In recent years, with the development of protected areas, cucumber downy mildew damage more and more serious. According to our investigation, a crop of cucumbers hit chemical pesticides 8 to 12 times, individual up to 14 to 15 times. Cucumber high cost, but also residual serious residues. In order to change this passive situation, we studied the cucumber downy mildew conditions and new prevention and treatment methods, and achieved initial results, are summarized as follows.