宁夏沙地主要灌木饲料林树种经济性状分析  

ECONOMIC CHARACTERS OF FORAGE SHRUBS IN SANDY LANDS OF NINGXLA

作　　者：孙德祥[1] 

机构地区：[1]宁夏农林科学院林业研究所

出　　处：《干旱区资源与环境》1995年第2期42-47,共6页Journal of Arid Land Resources and Environment

摘　　要：本文以沙区主要饲料灌木林树种毛条，柠条、沙柳，花棒为对象，着重分析其质量，产量等经济性状，将为沙区灌木饲料林的开发和管理提供基本依据。The paper selects the main forage shrubs in Ningxia sandy lands as study objects,theyare Caragana Karshinskii, Salix cheilophila,Hedysarum scoparium etc.A few measurableindexes showing shrub character are used,such as height,crown size,surface diameter treeage,branch number of a grove. The target indexes are biomass,ratio of eatable to uneat-able part,ratio of dry to fresh weight. Through establishing equations between the measur-able indexes of shrub and the economic indexes,we can forecast the biomass of forageshrub.

关 键 词：灌木饲料林 经济性状 回归方程 营养成分 

分 类 号：S759.39[农业科学—森林经理学]