Elms in the southwest can be planted. Elms are distributed in northeast, north, northwest and southwest provinces of China, and also in Korea, the former Soviet Union and Mongolia. Born on slopes, valleys, rivers, hills and sand dunes below the altitude of1000-2500m. Mainly through sowing, but also through grafting, tillering, cutting propagation. Harvest after sowing, 1000-grain weight is 7.7 grams, and the germination rate is 65%-85%. The survival rate of cutting propagation is high, reaching about 85%, and the cutting seedlings grow fast. Extensive management