Runoff Loading of Nutrients in the Paddy Plots applied with Conventional and Environmental Fertilizers

관행 및 환경농업지구에서의 질소.인 배출부하 특성 -충북 청원군 괴곡리 지구를 대상으로-

In this study, we investigated concentrations and loads of nutrients in the paddy plots with conventional and environmental farming method. For two experimental plot, type of fertilizer for basal dressing was different but total applied fertilizer rates was almost identical. The nutrient concentrations in irrigation and percolated water were almost constant, while the ponded water significantly increased after fertilizer application. The nutrient concentrations in ponded water at long distance from inlet was higher than those at short distance due to longer detention time.