国外针叶树种间杂交研究进展

杂种在工业用材林中的作用越来越受到世界各国重视。数十年来不少国家都开展过广泛的针叶树种间杂交研究，为选出各自适用的种间杂种，在理论、方法和实用性方面取得重大进展。通过种间杂交创造新的、对特殊生境更有适应力的杂种对引入树种更有效果。若干外域树种引入我国后表现良好，并成为主要造林树种，探索它们的杂种利用，对开展边沿低质土地的造林有重大实用性。通过推行“杂种林业”，提高我国工业人工林的经营效益，今后将成为遗传改良的一个重要领域。本文概述世界一些国家在这一领域的经验，供实施中借鉴。

Research Advances in Interspecific Hybridization of Conifers

The application of interspecific hybrids in the establishment of commercial plantation forests has increasingly received more attention in the world.A great deal of efforts have been made in many countries for several decades with interspecific hybridization of conifers,many hybrids have been selected and used in practical forestry.Hybrids are created for the adaptability to special sites,particularly effective for introduced species.A number of exotic species have become major plantation species in China,hybrids of the exotics are more applicable for establishing plantations on marginal land.The management effectiveness of plantation will greatly be improved through hybrid forestry.This paper reviewes the experience with which some countries have reached in coniferous interspecific hybridization.