新疆核桃结果早,质量好,单株产量高,在全国负有盛名。但是,如同其它果树一样,核桃的优良种性,只有采用无性繁殖,才能得到保持;种子实生繁殖,其后代大部分品质变劣。例如,阿克苏县阿音柯公社的一株纸皮核桃,在全疆是稀有的,但用其种子繁殖的后代,单果重由15.4克降为12.7克,壳厚由0.8毫米增加为1.0毫米,出仁率由62.19％降到56.50％。为了迅速、有效地繁育核桃良种,几年来,我们进行了小面积核桃嫁接试验,初获成功。一九七四年在阿克苏地区试验林场枝接的纸皮核桃,现已结果,它不但保持了原有的优良种性,而且某些方面还得 Xinjiang walnuts early results, good quality, high yield per plant, has a reputation in the country. However, like other fruit trees, walnut superiority can only be maintained by asexual reproduction; seeds reproduce in real terms and most of their offspring are poorly quality. For example, a paper-walnut tree at Aksu Commune, Aksu County, is rare in Xinjiang, but its progeny, which breed with its seeds, dropped from 15.4 grams to 12.7 grams and its shell thickness increased from 0.8 to 1.0 mm. Kernel rate dropped from 62.19% to 56.50%. In order to quickly and effectively breed walnut elite, over the past few years, we conducted a small area of ​​walnut grafting test, the first success. Now, in 1972, the pecan tree peeled from the experimental forest farm in the Aksu region has now ended up not only retaining its original goodness, but also in some aspects