| 提高土壤水分/养分资源利用效率 |
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| 引用本文： | 李韵珠,王凤仙.提高土壤水分/养分资源利用效率[J].中国农业大学学报,1997(Z1). |
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| 作者姓名： | 李韵珠 王凤仙 |
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| 作者单位： | 中国农业大学土壤和水科学系;100094; |
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| 基金项目： | 国家自然科学基金资助,项目编号:49361600 |
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| 摘 要： | 阐述了土壤水分/养分资源利用效率的涵义及其表达式。分析了大田小麦-玉米种植制度下,土壤水氮状况和产量、利用效率的关系。着重分析了土壤水分和氮素的周年消耗特征。并应用多目标优化模型对小麦-玉米的水氮管理措施进行了优化。
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| 关 键 词： | 土壤水分 土壤氮素 资源利用效率 优化 |
Raising the Use Efficiency of Soil Water/Nutrient Resources |
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| Li Yunzhu Wang Fengxian.Raising the Use Efficiency of Soil Water/Nutrient Resources[J].Journal of China Agricultural University,1997(Z1). |
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| Authors: | Li Yunzhu Wang Fengxian |
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| Institution: | Li Yunzhu Wang Fengxian (Dept.of Soil , Water Science,China Agricultural University 100094) |
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| Abstract: | In this paper,the meaning and expresses of the use efficiency of soil water and nutrient resources are stated and the crop yield and use efficiency under the different soil water and nitrogen resources regime are analyzed.Especially,the annual consumption characteristics of soil water and mineral nitrogen are focused.In order to raise the use effi- ciency of soil water and nitrogen resources,the multiple goal programming model is used for optimizing the soil water and nitrogen management under wheat-corn cr... |
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| Keywords: | soil water soil nitrogen use efficiency of resources optimization |
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