引言南繁实际上是对时间的利用。即在冬季利用海南岛等地四季常青的温暖气候,把北方的育种材料拿去加代繁殖,以实现一年完成两个以上世代的选育。南繁的空间利用是指在南繁过程中,人为地利用南北之间自然和生态条件上的差异,开展选育,以取得南繁的更大成果。 Introduction Fanfan is actually the use of time. In the winter, Hainan Island and other places using evergreen warm climate, take the breeding materials in the north to add generational breeding, in order to achieve a year to complete more than two generations of breeding. Utilization of the South Fanfang means that in the process of Nanfan, artificially exploiting the differences in natural and ecological conditions between North and South, breeding should be carried out in order to obtain more achievements of the South Fan.