高改柑桔，按一般方法需３年方能挂果投产。因一般高改短期内无大量叶片制造养分维持原大群根系生存需要，造成大量根群死掉，所以高改后树势恢复缓慢，投产推迟。改进后的新法关键点是留少量枝叶，保护了大量根群，从根本上扭转并缩短死根群──恢复根群的过程，最终达到早恢 High citrus citrus, according to the general method of 3 years before the fruit can be put into production. Due to the general high change in the short term without a large number of leaves to create nutrients to maintain the survival of the original large group of roots, resulting in a large number of root groups die, so after the high change recovery of tree vigor slowly, put into operation postponed. The key point of the improved new law is to keep a few branches and leaves, to protect a large number of root groups, to fundamentally reverse and shorten the dead root groups ─ ─ the process of restoring the root mass, and ultimately to early recovery