水稻氮模型ORYZA-0及其应用研究

Rice N Model ORYZA-O and Its Application

本研究利用氮行为模型ＯＲＹＺＡ－０并结合Ｐｒｉｃｅ（１９７９）规则系统数学优化程序，模拟了氮在土壤－水稻中的运行轨迹和水稻各生育期的需氮规律，并据此制定氮肥优化管理方案 试验结果表明：该模型推荐的施肥方案在不同品种、气候、季节和土壤条件下均具有较强的适应性，总体表现为增产、省氮、节本、增益，应用前景良好．

Using the rice N model ORYZA-O and the random search procedure proposed by Price (1979), the moving tracks of N in the soil-rice system and the regularities of N requirements at different rice development stages were simulated, and the optimized N management scenarios were then proposed. Experimental results showed that the model recommended N application scenarios were highly adaptive to various rice varieties, climates, seasons and soil conditions, and could achieve yield increase, N saving, cost reduction, and efficiency increase, showing a fine application future.