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【目的】订正小麦栽培模拟优化决策系统(WCSODS)的部分模型,使其具有更强的普适性。【方法】通过构建施氮量与土壤供氮量模型,利用氮素因子订正WCSODS的群体光合生产模型。【结果】检验结果表明,订正后的群体光合生产模型能较好的模拟氮胁迫条件下小麦的生长与产量。在氮肥不足或过量条件下叶面积模拟值与实测值相关系数分别为0.9524～0.9790和0.9754～0.9865,干物质重相关系数分别为0.9347～0.9799和0.9108～0.9789,产量相关系数为0.8164**。【结论】施氮不足或过量处理的LAI和干物质与适氮条件的变化趋势一致,说明对模型进行氮素订正结构合理,参数选值准确,经过氮素因子订正的模型更能适应小麦生产的需要。
【Objective】 Some models of WCSODS were revised to make them more universal. 【Method】 The model of photosynthesis of WCSODS was revised by using nitrogen factor to construct a model of nitrogen application and soil nitrogen supply. 【Result】 The results showed that the revised model of photosynthesis could better simulate the growth and yield of wheat under nitrogen stress. The correlation coefficients between simulated and measured values of leaf area were 0.9524 ~ 0.9790 and 0.9754 ~ 0.9865 under nitrogen deficient or excess nitrogen, respectively. The correlation coefficient of dry matter weight was 0.9347 ~ 0.9799 and 0.9108 ~ 0.9789 respectively, and the yield correlation coefficient was 0.8164 **. 【Conclusion】 The change trend of LAI and dry matter and suitable nitrogen condition are the same under the condition of nitrogen deficiency or over-treatment, which shows that the model has the advantages of rational structure adjustment, accurate parameter selection and nitrogen factor correction model to adapt to wheat production Need.