黄土高原几种灌木的叶营养成分分析

Analysis on Leaf Nutrients of Several Shrub Species on Loess Plateau

通过测定黄土高原４种主要人工灌木林树种沙棘、沙柳以及优良草原成分锦鸡儿属植物柠条锦鸡儿和小叶锦鸡儿的叶片营养成分，表明沙棘粗蛋白质、粗脂肪及适口性指标都高于其它３个树种，其叶是优良的饲料；与锦鸡儿属植物相比，沙柳虽然粗蛋白质含量低，但粗脂肪及适口性指标却较高，表明沙柳营养品质亦尚可；锦鸡儿属植物粗灰分及钙含量最高，无机营养意义较大。此外。

Determination on leaf nutrients of the four species constructing main artificial shrubberies on the Loess Plateau,i.e. Hippophae rhamnoides,Salix mongolica,Caragana korshinskii and C.microphylla showed that for gross protein,fat contents and eatability index, Hippophae rhamnoides was higher than three others,so its foliage was a fine forage;although gross protein in Slaix mongolica was lower than that of Caragana ,it was fairly good in nutritive quality for its higher eatability index and gross fat content;the two Caragana plants were more significant in inorganic nutrition as both were with the highest gross ash or calcium content among the four shrubs determined. Besides, a preliminary analysis was made on the dynamics of the determined nutrients in this paper.