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选育核桃良种、实行嫁接繁殖、是实现核桃良种化和品种化的重要途径。实践证明核桃嫁接繁殖能起到改良品种,提早结果,早期丰产,保持优良品种性状的作用。虽然核桃嫁接有许多优点,但由于核桃树本身含单宁多,嫁接成活率一般低于苹果、梨等果树。我所从一九七六年以来开始摸索适宜核桃嫁接成活的各种方法,在试验地内嫁接成活了八百多株核桃树,八五年进行了大面积的推广,通过多年的实践总结出适宜的嫁接时间和方法及经验,现介绍如下,仅供参考。
Breeding walnut varieties, the implementation of grafting, is an important way to achieve walnut varieties and varieties. Practice has proved that the grafting of walnut can play improved varieties, early results, early high yield, maintaining good varieties traits. Although there are many advantages of walnut grafting, but the walnut tree itself contains more tannin, grafting survival rate is generally lower than apples, pears and other fruit trees. Since 1976, I have started to explore various methods suitable for the survival of walnut grafting. In the experimental site, more than 800 walnut trees have been grafted into the land. In 1985, large-scale popularization was carried out. After years of practice, The grafting time and methods and experience are as follows, for reference purposes only.