中山杉引种研究进展及其在昆明地区的应用现状

综述中山杉无性系杂交选育及常规育苗、抗逆性、物候期、生长节律及引种推广适应性研究概况.目前其引种范围为东经102°~122°,北纬24°~39°,在土壤含盐量〈0.2%,pH值〈8.5,年均温14.5~21.9℃,年极端低温不低于-20°的广大地域范围中山杉均能正常生长,表现稳定.中山杉无性系在昆明地区的引种栽培试验结果表明,其在昆明亦具强的生态适应性和抗逆性,成为昆明地区一个新型的耐水湿乔木树种.文章进一步讨论了在昆明地区建立中山杉良种采穗圃基地以及为提高中山杉无性繁殖能力而营建中山杉无性系示范林等问题.

Introduction Research Progress of Ascendens Mucronatum and Its Application in Kunming

The hybrid clone breeding and conventional seedling,resistance,phenology,growth rhythm and Introduction and extension adaptability of Ascendens Mucronatum are summarized.At present the introduction range of which is longitude 102 °~122 °,latitude 24 °~39 °,where the soil salinity 0.2%,pH value 8.5,the average annual temperature of 14.5~21.9 ℃,extreme low temperature of not lower than-20 °.It is the vast geographical area Ascendens Mucronatum could grow normally,and performance stable.The introduction and cultivation of Ascendens Mucronatum clones are tested in Kunming and the results show that they have a strong ecological adaptability and resistance in Kunming as well and have become a new type of of Water Tolerant Tree species in Kunming.This paper further discussed issues as to establish Ascendens Mucronatum quality seedling nursery base in Kunming and to improve the ability of asexual reproduction through constructing a demonstration forest of Ascendens Mucronatum etc.