摘要
对速生耐盐碱杨树优良无性系吴屯杨的选育过程及其生物生态学特性、无性系繁殖与育苗方法、抗性表现以及无性系林分在不同立地条件下的生长表现进行了研究。多年、多点测定结果表明:吴屯杨耐盐碱、耐干旱、抗病虫害能力强;具有极显著的生长优势。24a生吴屯杨在含盐量4.1g/kg的盐碱地上单株材积达0.5m3,在沙壤土上单株材积达1.03m3;速生期开始时间早,持续时间长;树冠紧凑圆满,侧枝多,主干通直,形率达0.43。吴屯杨是营建速生丰产用材林、生态防护林、农林复合系统的优良无性系。
In this paper, studies on the selection and breeding process for superior clones of fast growing and salt tolerant Populus wutunensis and its biological and ecological characteristics, reproduction of clones and seedling cultivation, performance of resistance and the growth ofclonal stands in different sites were conducted. The results ofclonal tests in various sites for many years showed that Populus wutunensis was of salt and drought tolerance, strong resistance to diseases and insect pests and remarkable growth advantages. The single-tree volume for 24-year-old Populus wutunensis attained 0.5 m^3 in the saline-alkali soils with salt content of 4.1g/kg and reached 1.03 m^3 in the sandy loam. The fast growing period began early and lasts longer of Populus wutunensis and with full crown, rich lateral branches and slr/tight main stem, and the form factor reached 0.43. Populus wutunensis was the superior clones for establishment of fast growing and high-yield timber plantations, ecological protection forests and agro-forestry systems.
出处
《辽宁林业科技》
2009年第3期1-4,9,共5页
Liaoning Forestry Science and Technology
基金
国家自然科学基金(30872004)
辽宁省科学技术基金(2007207005)
关键词
吴屯杨
速生
耐盐碱
选育
Populus wutunensis
fast-growing
salt-tolerance
selection and breeding
