Concentrations of the Pollutant in Unit Paddy with Different Fertilizer Application Rates

시비조건의 차이에 따른 단위논에서의 오염물질의 농도특성

The effect of fertiltzer application on ponded and percolation water in paddies were evaluated at the experimental plots during irrigation period. We laid out three experimental plots such as 150% Excessive, 100% Standard and 70% Reduced. The concentration of T-N and T-P in ponded water were increased rapidly after application. The concentration of T-N and COD in percolated water increased with fertilizer application rates, while T-P concentration were almost constant.