柑桔断根，可促进新根生长，增强树势，提高产量。其技术要点如下： 　　一、断根时间。对幼年柑桔树每年在 6月和 8月进行 2次断根；对盛果树和成年树 (树龄 15年以上 )每年 6月或 8月进行 1次断根。幼年树重点要对旺长树、适令不结果树进行断根，盛果树和成年树重点要对低产 Citrus root, can promote the growth of new roots, enhance the tree vigor and increase production. The technical points are as follows: First, cut off the root time. The juvenile citrus tree is cut off twice a year in June and August; the cut tree is cut once in June or August every year for the full fruit tree and the adult tree (whose age is more than 15 years). Young trees should focus on the long tree, the tree is not ordered to cut the root, fruit trees and adult trees should focus on low-yield