南繁加代是加速育种进程的有效方法之一.由于广东冬繁与新疆春繁时生态条件特别是光温条件差异很大,致使许多育种材料在广东繁殖时变异很大,尤以数量性状变异最大,这给选择造成了很大困难.为了增加对育种材料选择的预见性,减少盲目性,我们在初步掌握稳定品种(或品系)南北异地种植 Nanfanadai is one of the effective ways to speed up the breeding process.Because the difference of ecological conditions, especially light and temperature, between winter and spring in Guangdong and in spring and spring in Xinjiang, many breeding materials have great variation in breeding in Guangdong, especially the largest variation in quantitative traits , Which has caused great difficulty in the selection.In order to increase the predictability of the selection of breeding materials and reduce the blindness, we initially master the stable varieties (or lines)