控制植物病毒危害,主要是通过预防,而不是依靠医治。因至今尚无理想的治疗植物病毒病的化学药物,目前,主要是采用未感染病毒的种子或块茎、鳞茎、砧木、接穗等无性繁殖材料,培养健康植物以及设法阻止病毒传播和侵入植物。生产实践上,往往以采取多种措施、综合防治。植物病毒病的控制和防治方法,大体可分为下面五类。一、获得和使用无病毒种质材料一些植物病毒可以通过种子或花粉传播。种子带毒在豆科、葫芦科和菊科中常见。因此要特别注意选用无病种株的种子种植。可以建立无病的留种地或到无病地区引种。有的带毒种子,可经过处理使种子脱毒,如将包心莴苣的种子放在80℃的干热空气中处理3天,番茄种子在76℃中处理3天,但 Control plant virus hazards, mainly through prevention, rather than relying on healing. As there is no ideal chemical for the treatment of plant virus diseases, no virus is currently used mainly by seeds or vegetative propagation materials such as tubers, bulbs, rootstocks and scions, to healthy plants and to the prevention of virus transmission and invasion into plants. Production practice, often to take a variety of measures, comprehensive prevention and control. Plant virus disease control and prevention methods can be broadly divided into the following five categories. First, access to and use of virus-free germplasm material Some plant viruses can be transmitted through seeds or pollen. Seed poisoning in legumes, Cucurbitaceae and Compositae are common. Therefore, special attention should be paid to seed selection of disease-free plants. Can be disease-free to stay or to non-disease areas to introduce. Some poisonous seeds can be treated to detoxify the seeds, for example, seeds of lettuce are treated for 3 days in hot, dry air at 80 ° C, and tomato seeds are treated for 3 days at 76 ° C