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三、重视无病毒苹果苗的培育随着苹果树的大量高接换头,出现一些影响果树生长的高接病。为了解决这一问题,日本政府农林水产省果树试验场盛岗支场于1964年开始搞热处理脱毒。把当时的病毒分离出两个株系,即茎痘病毒(SPV)和茎沟槽病(SGV)。但对苗木处理、鉴定方法、配套育苗等都没有继续进行研究。直到七十年代,有些果树科研单位又较普遍地开展了这项工作的研究。进入八十年代后,一些生产单位也从生产角度开展了这项研究。一些农户对无病毒苗也有了认识,不惜高价买无病毒苗、建无病毒苗圃。他们认为,有了无病毒苗,谁再买有病毒苗,谁就是疯子。
Third, pay attention to the cultivation of virus-free apple seedlings With a large number of apple trees take over the head, there are some high incidence of disease affecting the growth of fruit trees. In order to solve this problem, the Japanese government, Ministry of Agriculture, Forestry and Fruit, Fruit Tree Test Site Sheng Kong branch in 1964 began to heat treatment detoxification. Two strains of the virus were isolated at that time: stem-pox virus (SPV) and stem-groove disease (SGV). However, seedling treatment, identification methods, supporting nursery and so did not continue to study. Until the seventies, some fruit trees research units carried out more general research on this work. After entering the eighties, some production units carried out this research from a production point of view. Some farmers have no knowledge of virus-free vaccine, at no cost to buy virus-free vaccine, built virus-free nurseries. They think, with no virus vaccine, who buy a virus vaccine, who is crazy.