近日,山西省晋中市榆次区东阳镇庞志村农民刘顺藻发现,他种植的大棚黄瓜叶子上出现了绿斑,后又变成不规则的黄斑,背面还有一层黑色像发了霉似的东西,赶紧上网打开晋中市农田有害生物查询系统,查询结果让他豁然开朗:黄瓜得了霜霉病,通过通风降低大棚内湿度等管理措施就能有效防治黄瓜霜霉 Recently, Liuzong Algae, a farmer from Pangzhicun Village, Dongyang Town, Yuci District, Jinzhong City, Shanxi Province, found that a green spot appeared on the leaves of a greenhouse cucumber grown by him and became an irregular yellow spot on the back. There was also a black layer on the back like a moldy Things, and quickly open the Jinzhong City Pests query system, the query results let him suddenly: cucumber downy mildew, ventilation through the greenhouse to reduce humidity and other management measures can effectively prevent cucumber downy mildew