Design for Stocking Rate and Grazing Feeding in Inner Mongolia Steppe

For promoting management of Inner Mongolia steppe,we evaluated the processes of grassland biomass formation and suitable grazing parameters.The results show that forage biomass is a single peak curve while the diurnal forage yield is a double peak curve during the period of spring to autumn.Based on the forage yield dynamics and phenology,we recommend the grazing date starts from the last ten-day of May,and ends in the last ten-day period of September or the first ten-day of October for a period of 120 d~140 d.The optimal stocking rate is 8 Au·hm^-2~9 Au·hm^-2 (sheep) for the grazing season.The growth potential of grazing lambs could attain 160 kg·hm^-2~180 kg·hm^-2,and at least a 23% increase in grass yield,and thus has very good economic benefits.