大兴安岭林区引种长白落叶松的研究

INTRODUCTION OF LARIX OLGENSIS IN DAXING' ANLING

为丰富大兴安岭树木种质资源,缓解营林生产种苗供需矛盾,自70年代起,在大兴安岭东坡的加格达奇进行了长白落叶松引种研究。通过该树种在引种地生长、物候、生长节律、适应性、抗性等系统观察,并调查了历史上的引种林地,认为长白落叶松在引种地经济性状没有降低,生长量超过了当地乡土树种兴安落叶松,能够正常完成开花结实、更新等过程,引种是成功的。并结合种源试验对引种的最佳种源进行了探讨。还通过引种区生态因子的分析,确定了以蒙古栎、黑桦的天然分布和年大于等于10℃的1600℃积温线走向为主要依据的引种区划。

Introduction of Larix olgensis in eastern slope of Daxing′anling,Jiagedaqi, had been tested since 1970′s, in order to rich the seed quality,moderate the controdictions of seed supply and seeding requirement in silviculture. It is thought that the economical property of Larix have not reduce,tile increment is larger than the indigenous species, Larix gmelinii, by observed the tree growth,phenology, adaptability,resistance and the introduction area in history. The introduction is success, it can fulfil the process of flower, fruiting and regeneration. By means of provenance test, optimum provenance was discussed. Analysed the ecological factor in the area, the introduction division was determined based on natural distribution of oak and dahurian birch and the direction of annual accumulated temperature 1600℃ of big or equal 10℃.