摘要
试验对梭梭、花棒、杨柴、乔木状沙拐枣和毛条５个沙生饲用灌木树种在其生长季节连续采家畜可食部分进行养分测试，结果表明：５个树种的粗蛋白质含量均呈持续下降型，粗纤维含量呈持续上升型，粗脂肪含量呈后期增长型；无氮浸出物的含量：沙拐枣呈持续下降型，其余４个树种变化平稳；到８月下旬，花棒、杨柴和毛条的营养价值接近于优良栽培牧草紫花苜蓿盛花期含量。５个树种的饲料采收应在８月下旬进行。
The test is given to 5 kinds of psamophytes forage shrubs in their growing periods with continuous collecting the edible parts.The result shows that the coarse protein contents of the 5 species keep on descending while the contents of coarse fibre keep up ascending,and the contents of the coarse fat are also in the ascending form during the later growing period.For the contents of the carbohydrate.Calligonum mongolicum is in a continued decline form.The other 4 species remain stable.The nutrition contents of Hedysarum scoparicum ,Hedysarum mongolicum and Caragana Korshiskii are close to that of Medicago sativa in full bloom during the last ten day of August.So the forage of all the 5 species should be collected during the last ten day of August.
关键词
沙生饲用灌木
营养动态
psamophytes forage shrubs
nutritive development
