A Simulation Model of Spring Wheat Growing Under Conditions of Actual Water Supply and Nitrogen Deficiency

Base on field experimental data, the influences of soil water stress and nitrogen deficiency on the crop growing are investigated, and the simulation model of spring wheat growing is established. Comparing with the field experimental data (1988~1990), the simulation results show that the mean relative error is less than 5% for the weight of total dry matter and 10% for the spike weight. In addition, leaf area index, total nitrogen-uptaked content and grain nitrogen content, other organs weight and soil water content within root depth etc, are also simulated well