Six varieties of Creeping rooted alfalfa introduced from western Canada were planted in eastern part of Inner Mongolia for three years(1984~1986). Data showed that most of the introductions had creeping root system in varying degrees. Highest percentage of creeping rooted plants among those varieties were85.5%(Spreader). Heinrichs had both high yielding and good creeping root system, and the winterhardiness of Rangelander might be the best consistent one among them, Survival of the introductions ranged from...