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对选自中国和美国的１１个冰草材料／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。产于内蒙古的冰草，牧草产量和稳产性显著优于引自北美的供试品种，其中蒙古冰草表现最好；北美的供试品种在内蒙古干旱地区旱作建植困难，在半干旱地区降水丰年播种可收获２～３年牧草。一般来说，播种当年的建植水平高时，第二年的牧草产量最高，以后随着生长年限的增加产量逐年下降，但生长季降水量对产量的年际变化也产生重要影响。
Eleven icegrass materials / 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. The output of grass and grass in Inner Mongolia was significantly superior to that of the test cultivars from North America. Among them, the grass of Mongolian Tobacco was the best. The test cultivars in North America were difficult to be planted dryly in the arid area of Inner Mongolia. In the semi-arid area Precipitation Harvest seeding 2 to 3 years harvest grass. Generally speaking, when the planting level was high in the year of planting, the yield of the pasture in the second year was the highest. Afterwards, the output decreased with the increase of the growing year, but the precipitation in the growing season also had an important influence on the interannual variation of the output.