| The mixed application of different nitrogen and phosphorus fertilizers on soil nitrogen horizontal distribution was studied by indoor simulated drip fertigation．The results showed that the soil water content decreased linearly and distributed horizontally．The soil water content was not affected by different nitrogen fertilizers．The moving of soil NO-3—N was accelerated with the mixed application of nitrogen and phosphorus fertilizer．Soil NH+4—N content was the highest at the drip head and the maximum moving distance was 7．5 cm horizontally． |