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对不同时期的缘毛雀麦和无芒雀麦（５个类型）的营养物质动态、干草产量动态和粗蛋白质产量动态的研究结果表明，随着生育日龄的增加，粗蛋白质、粗脂肪、粗灰分和磷含量逐渐下降：无氮浸出物和粗纤维含量逐渐增加，并符合方程Ｙ＝Ａ＋ＢＸ。缘毛雀麦和不同来源的３个类型的无芒雀麦，其地上部生物量和粗蛋白质产量符合Ｌｏｇｉｓｔｉｃ方程。全部供试牧草最适利用时期是牧草开花期至种子乳熟期。
The dynamic changes of nutrient content, hay yield and crude protein yield of C. bungei and M. fredii in different periods showed that with the increase of the growing days, crude protein, crude fat, Crude ash and phosphorus content decreased gradually: nitrogen-free extract and crude fiber content gradually increased, and in line with the equation Y = A + BX. C. mongolica and three types of M. przewalskii from different sources, the shoot biomass and crude protein yield accorded with Logistic equation. All the test forage optimum use period is forage flowering to the seed milk ripening stage.