本文探讨了羊草地上部分营养物质的季节动态。在有机成份中,有机碳的季节变化较平稳;脂肪、可溶性糖、淀粉的含量生长初期和末期较高;随着时间的推进,蛋白质含量逐渐减少,纤维则逐渐增加。在无机成份中,氮、磷、钾的含量生长初期最高,随着羊草的生长,含量逐渐下降,三种元素的含量叶>茎>枯死体。其它矿质元素的季节变化波动较大,没有明显的规律,但除镁的峰值出现在8月外,其它元素基本上呈初高末低的形式。 This article explored the seasonal dynamics of some nutrients in the sheep. In the organic components, the seasonal variation of organic carbon was relatively stable; the contents of fat, soluble sugar and starch were higher at the beginning and the end of growth; with the time going, the protein content decreased and the fiber increased gradually. In the inorganic components, the content of nitrogen, phosphorus and potassium was the highest at the beginning of growth, with the growth of Leymus chinensis, the content decreased gradually, the contents of three elements were leaf> stem> dead body. The seasonal variation of other mineral elements fluctuated greatly, with no obvious regularity. However, the peak of magnesium except appeared in August, and the other elements were basically in the form of initial high and low end.