目前，生物技术在造纸用材基地林中的应用已取得迅速进展。在这方面，美国、英国、日本等国家发表了一些重要的研究成果，现简要介绍如下：基因型不同的生物体相互交配或结合而产生杂种的过程，可分天然杂交和人工杂交，有性杂交和无性杂交（体细胞杂交）以及远缘杂交和种... At present, biotechnology has made rapid progress in the use of paper-based timber forests. In this regard, the United States, Britain, Japan and other countries published a number of important research results, are briefly described as follows: genotypes of different organisms interact or combine to produce hybrids, can be divided into natural hybrids and artificial hybrids, sexual Hybridization and cloning (somatic hybridization) and distant hybridization and species ...