柚树高接改冠技术景洪市东风农场技术站（６６６１２２）王卫疆柚树复壮改冠技术的应用，其目的在于改冠换种，提早结果，恢复老树经济产量。现将操作技术介绍如下。（１）老树高位切接法及效果。运用此法的时间须掌握在秋冬季，枝接部位离主枝分叉处０．２～１米，程序为... Grapefruit high take crown technology Jinghong Dongfeng Farm Technical Station (666122) Wang Weijiang pomelo rejuvenation change crown technology, the purpose is to change the crown change, early results, to restore the economic output of old trees. The operation technology is introduced below. (1) the old tree cut the law and effect. The use of this method of time to be in the autumn and winter, branches from the main branches bifurcation 0.2 ~ 1 m, procedures for ...