八十年代以来,我国林木良种基地建设有了长足的发展,然而,目前良种产量远不能满足社会的需要,尤其是落叶松因受开花结实特性和自然条件所限,种子时常奇缺,为此,无性繁殖技术研究已成为全国各地的科技攻关目标,现在嫩枝全光雾插育苗已广泛展开,并取得成效,这对科技服务于经济建设迈出了可喜的一步。但是,此项技术难以实现 Since the 1980s, there has been a tremendous development in the construction of the tree seedbeds in our country. However, at present, the yield of the seed far can not meet the needs of the society. In particular, the seeds are often scarce due to the limited flowering and fruiting characteristics and natural conditions. The research on asexual reproduction technology has become the target of scientific and technological research all over the country. Now that the whole branch of the whole plant has been expanded and has achieved fruitful results, this has taken a gratifying step toward the economic and technological development of science and technology. However, this technique is difficult to achieve