樟子松苗木的耐盐性及其对造林林木生长的影响  

A Research on Seedling Salt Resistance of Pinus sylvestris var. mongolica and Its Growth Influence for the Forest-trees

作　　者：满多清[1,2] 刘世增[1,2] 严子柱[3] 高志海[4] 孙学刚[5] 

机构地区：[1]甘肃省治沙研究所 [2]中国林业科学研究院民勤治沙综合试验站,民勤733300 [3]中国林业科学研究院民勤治沙综合试验站 [4]中国林业科学研究院资源信息所 [5]甘肃农业大学林学院

出　　处：《中国农学通报》2006年第3期136-140,共5页Chinese Agricultural Science Bulletin

基　　金：甘肃省科技项目"河西走廊防护林体系林种多样性培育及林业可持续发展研究与示范"(QS041-C31-02);"十五"国家科技攻关项目"内陆河流域防沙治沙体系研究"(2002BA517A09)资助。

摘　　要：中国土壤自东南向西北含盐量逐渐上升,而樟子松适宜于弱酸性至弱碱性土壤上生长。西北荒漠区除了严酷的气候条件外,土壤含盐量及pH值高,严重制约着樟子松的本地化育苗和造林林木的生长。经试验研究:樟子松幼苗对土壤盐分很敏感,不仅影响着幼苗的存活,也影响着苗木的正常生长和发育。2龄移植换床苗地土壤全盐量应以0.5%、种子育苗以0.4%为界限。在影响樟子松幼苗移栽成活率的盐离子因素中,HCO3-为主导因子,其次为SO42-和Mg2+、Ca2+、K++Na+、Cl-。并随着樟子松苗龄的增大,耐盐性增强,但对其林木生长的影响也是显而易见的。The salt content in soil is increased gradually from southeast to northwest in China, P/nus sylvestris var. mongolica is adopted in the soil of pH≈7. Except the harsh climate conditions in northwest arid area, the high salt content and pH value in soil limited local seedling nursery and its forest growth seriously in desert area. The experimental research shows that the two-year old seedlings are sensitive to the soil salt, it is not only influenced the seedling survive, but also influenced its growth and development. The soil salt content for two-year old transplanting seedlings can not be more than seed sowing nursery. In salt ions factors for surviving factor, seconds are SO42-and Mg2^＋,Ca^2＋, K^＋＋Na^＋,Cl^-. creasing gradually, however, the influence of the forest ratio of transplanting seedlings 0.5% and 0.4% for , HCO3^- is the main With the age increasing, the salt resistance is ingrowth is obviously.

关 键 词：引种 樟子松苗木 耐盐性 造林林木 影响 

分 类 号：S662.1[农业科学—果树学]