为了充分利用纯系良种砧木资源,可将挖苗时修剪下的大量废根进行繁殖,春季嫁接后当年即可成苗,可比枳种播种育苗、枳枝嫁接扦插缩短育苗时间1—1.5年。一、选根要选用纯系丰产枳、三年出圃的嫁接苗掘起后剪下的全侧根段进行嫁接。长16—21厘米、直径0.5—0.8厘米的根进行春季嫁接;直径0.5厘米以下的另行 In order to make full use of pure rootstocks, the large amount of waste roots pruning can be propagated. After the spring grafting, seedlings can be planted and seedlings can be planted better than that of fresh and fonn of the tree. The cuttage of the branch is shortened by 1-1.5 years. First, the election root system should be purely high-yield trifoliate orange, three years after the nursery grafted seedlings excavated cut the entire lateral root section for grafting. Length 16-21 cm, 0.5-0.8 cm in diameter for spring grafting roots; diameter of 0.5 cm or less