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七十年代以来树木的无性繁殖应用在林木遗传改良上取得了很大的进展,开阔了无性系林业的新阶段。林木良种生产取无性系改良途径,不仅方式简便、迅速、灵活,而且增益更为直接和显著。能够无性繁殖的树种,走无性系改良的途径,决不再搞种子园,这已成为当前发展趋势。本文系统地综述了无性繁殖在林木遗传改良上的地位和作用,同时对无性系改良和无性系造林中应注意的问题,也进行了扼要的评述。
Asexual propagation of trees since seventies has made great progress in forest genetic improvement, opening up a new phase of clonal forestry. Forest seed production to take cloning improved approach, not only simple, rapid, flexible, and the gain is more direct and significant. Able to reproduce the tree species, take the asexual ways to improve, never to engage in seed orchard, which has become the current trend. This paper systematically reviews the status and role of asexual reproduction in forest genetic improvement, and also briefly reviews the issues that should be paid attention to in clonal improvement and clonal afforestation.