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玉米粗缩病和水稻黑条矮缩病都是由灰飞虱传播的毁灭性病害，而且目前还没有防治病毒病的有效农药，所以，防治两种病毒病的关键是防治灰飞虱。经过几年的试验，现介绍几种有效的防治方法： １药剂拌种（浸种） 水稻、玉米３～５叶期最易被侵染而感染病毒病，老病区应做好浸种
Both maize culling and rice black-streaked dwarf disease are devastating diseases transmitted by the planthopper, and at present, there is no effective pesticide for controlling the virus disease. Therefore, the key to combating the two virus diseases is to control the plantain. After several years of testing, are introduced several effective methods of prevention and treatment: 1 pesticide seed dressing (soaked) rice, corn 3 to 5 leaf stage of the most vulnerable to infection and viral disease, the old ward should be soaking