一、黄瓜常见病虫害与防治1、黄瓜白粉病:为害植株地上各部分,但以叶、蔓受害为主。初期叶片两面出现白色近圆形小粉斑,后扩展成边缘不明显的大片白粉区。严重时整叶布满白粉,发病后期白色霉斑因菌丝老熟变为灰色,病叶黄枯,有小黑点。防治要点:田间管理:尽量选用抗病品种,注意透光、合理灌水、降低空气湿度、施足有机肥。药剂防治:发病初期用天诺颗粒丰杀菌型兑水1000倍液喷雾,间隔5~7天喷一 First, common diseases and pests and cucumber 1, cucumber powdery mildew: damage to plant parts of the ground, but the leaves, vine victims. Early white leaves appear on both sides of a small round spot, after the expansion into the edge of obvious large areas of white powder. Severe whole leaf covered with white powder, the late onset of white mildew due to mycelium aging cooked into gray, sick yellowish brown, a little black spots. Prevention points: field management: try to use resistant varieties, pay attention to light, irrigation, reduce air humidity, Shi enough organic fertilizer. Pharmacy control: the early onset of the day Connaught particle abundance of 1000 times against the water spray, spray an interval of 5 to 7 days