果树无病毒栽培是一项农业高新技术,在一些发达国家如美、日、法、荷兰已普及推广。在我国山东、辽宁、河北、四川等省,已初步建立起果树无病毒苗木繁育体系,并取得了显著成效。实践证明,栽培无病毒果树苗在不增加投入的情况下,可提高单产30％ Fruit tree virus-free cultivation is an agricultural high-tech, in some developed countries such as the United States, Japan, France, the Netherlands has been popularized. In our country Shandong, Liaoning, Hebei, Sichuan and other provinces, we have initially established a fruitless tree seedling breeding system and achieved remarkable results. Practice has proved that cultivation of virus-free fruit saplings in the case of no increase in inputs, can increase the yield 30%