果树高接换头是生产上应用最多的老果园更新方法,改接后当年可形成花芽,第2年即可获得可观的经济产量,是一种快速实现良种化的有效途径。1贮备接穗秋季果树落叶后,在良种母株上选取木质化程度好、芽体饱满、径粗0.7~1.5厘米的1年生枝条作为接穗,去掉枝梢,截成50厘米左右长的段, Fruit tree high interchangeable head is the most used production methods of the old orchard, after the switch can then be formed flower buds, the first two years to obtain considerable economic output, is an effective way to achieve rapid seedization. 1 reserve scion Autumn fruit trees deciduous, the selection of the mother of the good quality of woody plants, bud full, diameter of 0.7 to 1.5 cm of 1-year-old branches as a scion, remove the shoots, cut into about 50 cm long segment,