一、引言牧草资源,是经过漫长的自然选择和人工培育而形成的生物资源。我国幅员辽阔、地形复杂、气候多样,如此优越的自然条件使得我国野生牧草资源极为丰富;另外,我国勤劳智慧的劳动人民,在其长期的生产和科学研究实践中,也培育出了很多宝贵的栽培牧草资源;因而,我国在世界上成了牧草资源最丰富的国家之一。这些牧草资源,正是不断发展我国畜 I. INTRODUCTION Herbage resources are biological resources formed after long natural selection and artificial cultivation. With its vast territory, complex terrain and diverse climates, such excellent natural conditions make the resources of wild forages extremely rich in our country. In addition, our industrious and hard-working working people have also cultivated a lot of precious and valuable materials in their long-term production and scientific research and practice Cultivation of pasture resources; thus, our country has become one of the countries with the most abundant pasture resources in the world. These forage resources, it is the continuous development of our livestock