The Laboratory Experiment and Numerical Analysis of Nitrogen Transport and Transformation in Flooded Soils

On the basis of laboratory experiments, the coupling mathematical model of N - fertilizer transport and transformation in flooded soils is established and solved by the finite difference method. Calculated values of numerical simulation compared with measured data, the agreement is satisfactory. The mathematical model is also applied for the study of the main factors influencing the process of N-fertilizer transport and transformation.