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
机构地区:[1]东北师范大学草地研究所
出 处:《东北师大学报(自然科学版)》1998年第1期49-53,共5页Journal of Northeast Normal University(Natural Science Edition)
基 金:国家自然科学基金
摘 要:在广泛观测和调查的基础上,对适用于根茎型禾草无性系种群年龄结构的研究方法作了概述.详细介绍了样地的选择,取样时间,取样方法,分蘖株、根茎、芽的年龄划分标准与鉴别方法,及其相关的研究与测定方法.对国内报道过的几种有关根茎禾草无性系种群年龄结构的研究方法作了评价.In view of observing, determining and investigating from all sides, the applicable methods of study on age structures of clonal populations in rhizome grass were reported in this paper. It was detailed recommended that there were the selection of sampling plots, the sampling time, the sampling methods, the designated standards and the differeniated methods on ages of the tillers, the rhizomes and the buds, and the relative other methods of studies and determinations. It was appraised that the several methods were reported on the age structures of clonal populations in rhizome grass.
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:3.133.128.223