1 西葫芦病毒病 发病时叶上有深绿色病斑,重病株上部叶片畸形、变小,后期叶片黄枯或死亡,病株结瓜少或不结瓜,瓜面呈瘤状突起或畸形。 防治方法:选用抗病性较强的品种,如早青、天津25号等。此外,及时清洁田园,铲除杂草,培育壮苗。发病初期喷洒1.5%植病灵乳剂1000倍液,或20%病毒A可湿性粉剂 1 zucchini virus disease when the leaves are dark green lesions, severe disease upper leaves deformity, smaller, the late yellow leaves or dead leaves, diseased plants less cucumber or fruiting, melon nodular tumor or deformity. Prevention and treatment methods: Selection of more resistant varieties, such as early Green, Tianjin No. 25 and so on. In addition, timely clean the pastoral areas, eliminate weeds and cultivate strong seedlings. Early onset of spraying 1.5% phytoplankton 1000 times solution, or 20% virus A WP