植物病毒主要靠接触、种子、和介体三种途径传播,其中介体传播最为重要。传毒介体除昆虫、螨类外,还有所谓“土传”中的线虫和低等真菌。菟丝子也可算是“植物介体”,但从它桥接过程看仍脱离不了接触传播范畴。这些介体中,昆虫是最主要的。 介体的传毒特性还常分为三种类型。1.非持久性传播。其特点是只需数秒钟的采食便可获得病毒,病毒只机械地沾附在口器表面,不进入介体体内,所以不存在在介体内潜育的问题,只需几秒钟便能完成传毒过程;若得不到传毒机会,病毒在数小时内就会自然死亡,脱皮也能失去病毒。饲毒前禁食 Plant viruses mainly rely on contact, seed, and media three ways of transmission, the most important intermediary transmission. In addition to insecticides, mites, and so-called “soil” in the nematodes and lower fungi. Dodder can also be regarded as “plant mediator,” but from the bridging process it still can not be separated from the scope of contact and communication. Among these mediators, insects are the most important. Medicament poisoning characteristics are often divided into three types. Non-persistent transmission. It is characterized by only a few seconds to get the virus can be acquired, the virus is only mechanically attached to the surface of the mouthparts, do not enter the mediator body, so there is no problem in the mediator, it only takes a few seconds To complete the transmission process; if not access to the virus, the virus will naturally death within a few hours, peeling can lose the virus. Fasting before feeding