大棚黄瓜种植中枯萎病、疫病、霜霉病、炭疽病、白粉病、细菌性角斑病等病害发生频繁,对产量影响较大,普通药剂防治投资大、费工,且有药物残留,对人体危害较大。采用无害化防治技术,可有效降低大 Diseases such as blight, downy mildew, downy mildew, anthracnose, powdery mildew and bacterial angular leaf disease are frequent in greenhouse cucumber cultivation, which have a great impact on the yield. There are large investments in prevention and treatment of common chemicals, laborious work, and drug residues. Human body greater harm. The use of harmless control technology, can effectively reduce the big