宁夏沙地主要灌木饲料林树种经济性状分析

经过对大量的野外调查数据的分析和研究，建立了宁夏沙地主要灌木饲料林树种毛条、柠条、沙柳、花棒丛生物量（鲜重）（地上部分）的多元线性回归方程，用半定位观测方法测定了这四个灌木树种丛生物量（鲜重）可食部分与不可食部分之比以及生物量的干鲜比，并给出了它们的营养成分。可为灌木饲料林的经营和管理提供理论依据。

ECONOMIC SHARACTER ANALYSIS OF MAIN FORGE SHRUBS ON SANDY LAND IN NINGXIA

Through analysis on the field investigation data a multivariate lincar regression equationof biomass(above-ground part)of main forage shrubs,including Caragama korshinskii,C. microphylla,Calix psammophila and Hedysarum scoparium,in Ningxia was established. The ratio between edible partand inedible part of these shrube and their fresh-dry biomass ratio were measured at semi-fixed sites,thus laying a theoretical basis for the management of forage shrub forest.