基于氮素胁迫的WCSODS模型订正与检验  

Modification and Verification to WCSODS Based on Nitrogen Stress

作　　者：马新明[1] 张娟娟[2] 刘合兵[3] 席磊[3] 高项飞[4] 

机构地区：[1]河南农业大学农学院,郑州450002 [2]南京农业大学资源与环境科学学院,南京210095 [3]河南农业大学信息与管理科学学院,郑州450002 [4]郑州轻工业学院,郑州450002

出　　处：《中国农业科学》2008年第2期391-396,共6页Scientia Agricultura Sinica

基　　金：国家科技部成果转化项目(03EFN21300100);河南省成果转化项目(2005HANCET-09)资助

摘　　要：【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。【Object】 To make the models of Wheat Cultivational Simulation Optimization Decision-making System（WCSODS） more compliant. 【Method】 Nitrogen rate was ued to modify the canopy photosynthetic product model of WCSODS by constructing the model of nitrogen fertilizer application and nitrogen supply from soil. 【Result】The improved model could properly simulate wheat growth and yield under N stress. Under deficient or sufficient N application, the correlation coefficient of the simulated and the observed LAI were 0.9524-0.9790 and 0.9754-0.9865, respectively, the dry matters were 0.9347-0.9799 and 0.9108-0.9789, respectively, and the yield was 0.8164＊＊.【Conclusion】The dynamic trend of LAI and dry matter were correlated under deficient or sufficient N application respectively, which showed that the modification of photosynthesis model was reasonable and the parameter was exact. The new model will meet the requirement of wheat production in Henan province.

关 键 词：小麦 WCSODS 优化决策系统 氮胁迫 应用 

分 类 号：S512.1[农业科学—作物学]