素有“植物癌症”之称的蔬菜病毒病是一种毁灭性病害,给蔬菜生产造成很大损失。番茄、辣椒、丝瓜等病毒病发生尤为严重。必须采取有效的措施来控制蔓延。一、田间为害症状1.花叶型。叶片上出现黄绿相间或深浅相间的斑驳,叶脉透明,叶略有皱缩的不正常现象,病株较健株略矮。2.蕨 Known as “plant cancer,” said the vegetable virus disease is a devastating disease, causing great losses to vegetable production. Tomato, pepper, loofah and other viral diseases are particularly serious. Effective measures must be taken to control the spread. First, the symptoms of the field 1. Mosaic type. Yellow and green leaves appear on the phase or the depth of the mottled mottled, transparent veins, leaves a little shrinkage of the abnormal phenomenon, diseased plants slightly shorter than the healthy plants. Fern