7种沙生灌木饲用营养成分评定

为了在宁夏干旱风沙区植被恢复模式及适应性管理技术研究中筛选节水耐旱、经济高效的优良适生植物，选用宁夏盐池干旱风沙区7种沙生灌木树种（沙木蓼、沙柳、红柳、杨柴、柠条、紫穗槐、花棒）的叶片为试验材料，测定其饲用养分指标，并对饲用营养价值进行综合评定，为干旱风沙区退化植被恢复中植被的筛选提供依据。结果表明：7种沙生灌木中除红柳外，其他6种树种的粗蛋白含量均最高，达到了优质谷类粮食蛋白含量(小麦13.3%，大米13.5%)的水平。其中柠条的中性、酸性洗涤纤维含量低，紫穗槐的钙磷比达到了饲用营养标准。因此，柠条和紫穗槐的饲用营养价值相对较高。
In order to select water？？saving, drought？？esistant, economically efficient and suitable vegetation for restoration mode and adaptive management technique in dry and sandy region in Ningxia, leaves of the seven shrub species（Atraphaxis frutescens, Salix psammophila,Tamarix ramosissima,Hedysarum mongolicum Turcz.,Caragana korshinskii Kom.,Amorpha fruticosa,Hedysarum scoparium Fisch.）were selected as the study materials in dry and sand. Their grazing values were analyzed and evaluated by measuring the nutrition of the leaves. The results showed that crude protein content of all species except T. ramosissima were up to the high quality food grain protein content (13.3% of wheat, 13.5% of rice). NDF and ADF of C. korshinskii Kom. were low, Ca/P of A. fruticosa achieved forage nutrition standard. The grazing nutrition of C. korshinskii Kom. and A. fruticosa were relatively high