棚室黄瓜生产常发生以黄瓜霜霉病为主,还会混生细菌性角斑病。由于药防良机都要求在“发病初期”。而此时二病害的初生小小病斑,是很难辨认出“彼此”,往往会造成混淆和误判。至使未能等到病害确认前进行药防,总是带有盲目性;如等到病害症状确认后再进行药防,时机定早错过。在 Cucumber squash production often occurs in cucumber downy mildew, but also mixed with bacterial angular leaf disease. Due to the anti-drug are good at “early onset.” At this time, the two primary lesion lesions are difficult to identify “each other”, often resulting in confusion and miscarriage of justice. To prevent failure to wait until the disease confirmed before the anti-drug, always with the blindness; wait until the disease symptoms confirmed after the anti-drug, the opportunity to miss early. in