Abstract：Based on the observation of runoff plots on sloping land in Muyang river middle stream of Songhuaba Reservoir in Kunming,the runoff amount,soil loss amount,output concentrations and output of the total nitrogen and total phosphorus in runoff plots were investigated.The results indicated that compared with the control study,runoff amount reduced 34.14%,soil loss amount reduced 57.17%,total Nitrogen and total Phosphorus output reduced 33.32% and 33.82% respectively, from plot under horizontal stage.The construction of horizontal stage on sloping land played a more obvious effect on soil and water conservation and fertilizer conservation,and it had a great significance for controlling the non-point source pollution matter.
2010, Vol. 8 
