毛主席教导我们:“在生产斗争和科学实验范围内,人类总是不断发展的,自然界也总是不断发展的,永远不会停止在一个水平上.”遵照毛主席的教导,如何突破果树栽培史上一直写着“南柑北苹”的框框,满足群众对水果多样化要求,为革命作出贡献,这就是我们要进行“北果南移”试种的目的. Chairman Mao taught us: “In the struggle for production and within the scope of scientific experiments, mankind always develops continuously and the nature constantly develops. It never stops at a certain level.” How to break through the principle of Chairman Mao’s teachings? In the history of fruit tree cultivation, we have always written the frame of “North Nanbei Pear” to meet the masses’ demands for diversification of fruits and contribute to the revolution. This is the purpose for which we want to carry out the experiment of “North Peasantry Migration”.