检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:鲜骏仁[1] 黄从德[1] 胡庭兴[1] 李贤伟[1] 吴勇刚[1]
机构地区:[1]四川农业大学生态林业工程重点实验室
出 处:《四川林业科技》2005年第1期43-48,共6页Journal of Sichuan Forestry Science and Technology
基 金:为四川省"九五"攻关"巨桉工业原料林营建技术体系研究"项目的部分内容。
摘 要:随着国民经济的发展和天然林保护工程的实施,我国木材的供需矛盾日益突出。虽然发展工业人工林是缓解这一矛盾的有效措施之一,但目前的工人林生产中尚存在许多问题,比如土壤酸化严重、地力衰退加剧、水土保持效益低下等。如何解决这些问题已成为当前人工林研究中的热点和重点。巨桉因其具有"速生、优质、丰产"的特性而被我国南方许多地方作为营造短周期工业用材林(特别是纸浆林)的重要树种。本文就我国近十多年对巨桉的研究作了简要评述,内容主要包括种源引种试验、遗传改良、引种生态适宜区区划和经营管理等方面,并提出了今后巨桉研究的方向和重点。Following the development of national economy and the implementation of the natural forest conservation project,timber is in short supply,and the contradiction of wood between supply and demand is becoming increasingly outstanding.It is one of the most efficient methods to expand industrial plantations so as to alleviate this contradiction.However,some problems are also found in these plantations,such as acceleration of soil acidification,increase of land capability decline,poor soil and water conservation benefit,and so on.How to solve these problems has become the hotspots and focuses in the studies of plantations.At present,Eucalyptus grandis has been used as one of the most important planting species for the establishment of short-rotation industrial plantations (especially pulpwood forest) in the south of China because it has characteristics of rapid growth,good quality and high yield.The paper briefly deals with recent more than ten years of studies in Eucalyptus gradis in China,mainly including introduction experiments of seed sources,genetic improvement,division of adaptative introduction areas,management of plantations,etc.And finally,some directions and keystones are proposed for further studies on how to solve these problems of Eucalyptus gradis plantations in the future.
分 类 号:S792[农业科学—林木遗传育种]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.222