Abstract: This text introduced and studied the local planting Son of proso species in the different stays the seedling density and different Fertilizering quantity of phosphoric acid Eran to the yield effect of the Son Under the condition in native area plant. According to this experiment, studying the consociation effect of Fertilizering quantity and the fatty density to the son of proso, maked the best seedling density and Fertilizering quantity, attain the purpose of not a seedling or a seedling, raised to labor the rate of production, raised the fertilizer utilization.