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对选自中国和美国的１２份豆科牧草材料／品种在内蒙古干旱和半干旱地区旱作条件下进行了牧草产量试验和分析。来源于内蒙古当地的豆科牧草产量显著优于引自北美的供试品种。在干旱地区，直立黄芪、扁蓿豆、达乌里胡枝子和牛枝子适应性较好，其中直立黄芪牧草产量最高。在半干旱地区，沙打旺牧草产量最高，但稳产性低于扁蓿豆和达乌里胡枝子。来源于北美的供试材料在内蒙古干旱地区不能收获牧草，在半干旱地区降水丰年播种可收获一定产量。生长季降水量和牧草的生长年限对牧草产量的年际变化有重要影响，影响程度因牧草种性及其生境不同而异。
Twelve forage legumes / cultivars selected from China and the United States were tested for pasture production and analyzed under drought conditions in arid and semi-arid areas of Inner Mongolia. Leguminous forages from Inner Mongolia were significantly better than those from North America. In arid areas, the erect Astragalus, Medicago lupulus, Lespedeza dahurica and M. przewalskii had better adaptability, among which the upright erect Astragalus membranaceus was the highest. In the semi-arid area, the yield of gramineous sand was the highest, but its stability was lower than that of alfalfa and dahurica. The test materials from North America can not be harvested in arid areas of Inner Mongolia, and harvest can be harvested in the harvest seasons in semi-arid area. The precipitation in the growing season and the growing season of forage have a significant impact on the interannual variation of forage production, and the degree of influence varies with the forage species and habitat.