| 作物水分氮素生产函数模型的研究 |
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| 引用本文： | 王康,沈荣开,王富庆.作物水分氮素生产函数模型的研究[J].水科学进展,2002,13(6):736-740. |
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| 作者姓名： | 王康 沈荣开 王富庆 |
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| 作者单位： | 武汉大学水电学院水利工程系, 湖北, 武汉, 430072 |
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| 基金项目： | 国家自然科学基金重点项目(59839320) |
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| 摘 要： | 在水分生产函数动态产量模型的基础上,考虑土壤氮素对作物生长的影响,建立了作物水分 氮素生产函数动态产量模型,根据作物生长过程中水分和氮素状态,可以对干物质生长过程进行跟踪和预测预报,利用北京永乐店试验资料进行模型参数的拟合,并应用该模型对不同生育阶段干物质产量进行预测,效果良好。
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| 关 键 词： | 作物水分氮素生产函数 动态产量模型 机理型模型 |
| 文章编号： | 1001-6791(2002)06-736-05 |
| 收稿时间： | 2001-09-30 |
| 修稿时间： | 2001年9月30日 |
Dynamic production function model for crop yield in response to water and nitrogen |
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| WANG Kang,SHEN Rong-kai,WANG Fu-qing.Dynamic production function model for crop yield in response to water and nitrogen[J].Advances in Water Science,2002,13(6):736-740. |
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| Authors: | WANG Kang SHEN Rong-kai WANG Fu-qing |
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| Institution: | Department of Irrigation and Drainage, Wuhan University, Wuhan 430072, China |
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| Abstract: | A dynamic model for crop dry matter production response to daily available soil water and nitro gen was presented.Field experiments were carried out at Yongledian water saving station,Beijing.Using in formation of accumulative dry mater of winter wheat with full supply of water and nitrogen,we estimated the function of winter wheat to soil water and nitrogen based on the experimental data.With the simulated model parameters we calculated the dry mater production under various irrigation and nitrogen conditions.Good agreements between simulated and measured dry mater accumulation process were obtained. |
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| Keywords: | crop water nitrogen production function dynamic crop yield model theoretical model |
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