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烟草病毒病是我国烟草重要病害之一,在山东烟区发生更是普遍而又严重,经常使烟草遭受重大损失,成了烟草生产上一个突出问题。早在五十年代已查明山东烟区既有烟草花叶病毒(TMV),同时又有黄瓜花叶病毒(CMV),以前者发生较多,到了六十年代初,CMV渐趋上升,进入七十年代连年发生,1974至1977年四年中有三年流行,其中1975年大流行,病重田减产20-50%,夏烟感病品种减产达70%以上,使烟草蒙受重大损失。山东原是个夏烟产区,自七十年代初几乎全改为春烟,随着夏烟被春烟所代替,病毒病究竟有那些变
Tobacco virus disease is one of the important diseases of tobacco in our country. It is more common and serious in tobacco smoke area of Shandong Province. It often causes heavy losses to tobacco and became a prominent problem in tobacco production. As early as the 1950s, both the existing tobacco mosaic virus (TMV) and the cucumber mosaic virus (CMV) have been identified in Shandong tobacco area. The former occurred more frequently. By the early 1960s, the CMV gradually increased and entered The seventies took place year after year. During the four years from 1974 to 1977, there were three years of epidemics. Among them, the pandemic in 1975 witnessed a 20-50% reduction in the output of ill and serious fields, and a decrease of more than 70% in summer tobacco susceptible varieties, causing heavy losses to tobacco. Shandong was originally a summer smoke producing area, almost completely changed to spring smoke since the early seventies, with the summer smoke being replaced by spring smoke, viral diseases actually have those changes