For understanding the characteristics of nitrogen(N) and phosphorus(P) losses from sloping uplands in small watershed of Three Gorges Reservoir Region,standard runoff plots were used to analyze respectively the losses amount and speciation characteristics of N and P through investigation of conventional tillage measure(downslope cultivation,DC) and tillage measures based on water and soil conservation including five methods,which respectively were DC+polyacrylamide(PAM),no-tillage+DC+straw overlay,DC+hedger...