野生禾本科牧草利用方式初探

通过对中型狼尾草等８种野（逸）生禾科牧草的青饲、青贮、氨化、干草等利用方式的研究，结果表明：在营养生长期青饲，８种禾草的粗蛋白质含量为１１．１７％～１９．２４％，适口性较好，随着生育期的推移，粗蛋白质含量降低，适口性下降；孕穗至初花期调制干草和青贮，干草的粗蛋白质含量为３．９２％～７．３２％，青贮料为６．３０％～１０．１８％，适口性分别为优等到中等和优等到良等；种熟期氨化处理后，粗蛋白质含量为８．６８％～１４．５９％，颜色棕褐色至金黄色，适口性为优等到良等，粗纤维２８．９４％～４０．８０％。

A PRELIMINARY DISCUSSION ON WAYS OF UTILIZING WILD GROWN GRASSES

Through studies on eight rangeland (or loosely grown without management in trial) grass species that were utilized as green fodders, silages, ammoniated feeds and hays, the results were shown that during their respective vegetative stages, the crude protein contents were ranged from 11.17% to 19.24%,all with somewhat better palatability. When the hays and silages were made at blooming stage, the crude protein contents would be ranged from 3.92%～7.32% and 6.30%～10.18% respectively. Then through ammonification, the CP contents of the grasses in trial or not, at their seed ripening stage, was finally ranged from 8.68% to 14.99%(all in average), and meantimely, all those feeds were showing either brown or yellowish golden color and better palatability, more or less.