近年来,苹果生产中品种更新进展较快,高接换头是常用的方法之一。过去,高接换头多采用短接穗、单芽嫁接,接后往往枝条生长直立,旺盛,接后第一年基本不能形成短果枝,需第三年才能见果。为了快速恢复高接树冠,提早结果,我们进行了长、短接穗高接的对比试验,长接穗为35.6厘米,短接穗为11.4厘米,高接当年它们的平均萌芽数分别为8.06和1.7;抽生新梢数分别为 In recent years, apple varieties in the production of faster progress, high interchangeable head is one of the commonly used methods. In the past, the use of more high-head short spike, single bud grafting, then the branches often grow upright, strong, then the first year of basic can not form short fruit branches, take the third year to see fruit. In order to quickly recover the canopy, early results, we conducted a long, short scion of high contrast test, long scion 35.6 cm, short scion 11.4 cm, high then the average number of sprouts were 8.06 and 1.7; pumping Students were the number of new shoots