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黄瓜八大病害识别治疗歌诀角斑病叶片生浅黄斑多角形到后期易穿孔瓜软腐流菌脓细菌性药对症链霉素百菌清霜霉病叶上生黄色斑多角形底面瞧生黑毛跑马干来势猛乙磷铝甲霜灵白粉病茎叶生白粉斑边不清白变灰黑点生多菌灵粉锈宁灰霉病幼瓜生先烂花后烂瓜脐部烂生霉层叶受害灰霉...
Cucumber eight disease identification and treatment of tactics Kok disease leaf blade raw pale macular polygons to the late perforation melon soft rot bacteria pus bacterial drug symptomatic streptomycin chlorpyrifos mildew leaves yellow spots on the surface of polygons bottom see black hair horse dry The prevalence of Meng phosphoprotein Metalaxyl Powdery mildew stems and leaves of raw white plaque unclear gray black spots of carbendazim powder rust Botrytis cinerea seedlings rotten after rotten melon umbilical rotten mold layer leaves gray mold. .