白榆一向用种子繁殖,也有伐根萌生成材的。七十年代以来,随着白榆良种选育研究工作的开展,白榆繁殖方法的研究,日益引起重视。正如细胞遗传学指出的那样,经过基因重组的种子,再行繁殖不能准确传递亲本的遗传基础,这无论对优树测定或推广都造成了很大困难,因而白榆无性繁殖技术研究就成为我们工作的重要内容之一。我们先后进行过芽接、劈接、扦插、埋根等无性繁殖方 White elm has always been breeding seed, there are sprouting root initiation material. Since seventies, with the development of elm seed selection research, the research on the reproduction method of elm is paid more and more attention. As the cytogenetics point out, recombination of seeds, reprogramming can not accurately transfer the genetic basis of the parents, which is very difficult to determine or promote superior trees have, so the technology research of Ulmus pumila became us One of the important parts of work. We have budding, split, cuttings, buried roots and other asexual reproduction side