1996～2000年在陕西延安甘泉、安塞两县6乡15村推广刨刀削接穗插皮枝接技术高接换头,成活率达95%以上,获得了较好的经济效益,并对实现苹果品种区域化、良种化有推动作用。技术要点如下。1 接穗选择在丰产健壮的盛果期树上选用树冠外围生长充实、芽体饱满的一年生发育枝。接穗可结合冬剪采集、沙藏,窖内温度控制在1℃左右为宜。春季天气转暖后,要防止接穗发干、发霉,应经常检查,及时喷水保湿。在高接时,如果接穗发干,要剪去基部2～3cm,浸入水中一昼夜,让接穗充分吸水,以利成活。2 高接时间春季插皮枝接应在树液流动旺盛、树皮易剥 1996-2000 in Shaanxi Yanan Oasis, Ansai two counties in six townships 15 villages to promote the plane cut scion cuttings and then pick high picks, the survival rate of 95% or more, access to a better economic benefits, and the realization of the apple Regionalization of varieties, improved varieties have a role in promoting. Technical points are as follows. Selection of a scion Robust fruit in the robust fruit tree selection on the outer growth of the full crown, bud full of annual growth branch. Scion can be collected with winter shear, sand storage, cellar temperature control at about 1 ℃ is appropriate. After the spring warmer, to prevent scion hair dry, moldy, should always check, timely water moisturizing. In the high pick, if the scion hair dry, to cut the base 2 ~ 3cm, immersed in water a day and night, so that the scion full of water to facilitate the survival. 2 high pick-up time in spring branch flow should be strong in the sap flow, easy to peel the bark