无毒化栽培是当今世界果树生产发展的方向。荷、美、日本等国已基本实现了果树无病毒化栽培。近几年来我国也十分重视,积极繁育无病毒苗木,栽培无病毒化苹果园,以提高苹果的产量和质量,增加效益。 苹果病毒病的危害 苹果病毒病在我国各苹果产区发生普遍,主要栽培品种的带病毒株率为60～100％;黄河故道地区更为严 Non-toxic cultivation is the direction of fruit tree production in the world today. The Netherlands, the United States, Japan and other countries have basically realized the cultivation of fruit trees virus-free. In recent years, our country also attaches great importance to the active breeding of virus-free seedlings, cultivation of virus-free apple orchards in order to improve apple production and quality, increase efficiency. Apple virus disease hazards Apple virus disease occurs in all apple-growing areas in our country, the main cultivars with the virus strain rate of 60 to 100%; the old course of the Yellow River is more stringent