| 滴灌大棚茄子需水量计算模型的定量分析比较 |
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| 引用本文： | 葛建坤,罗金耀,李小平.滴灌大棚茄子需水量计算模型的定量分析比较[J].灌溉排水学报,2009(5). |
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| 作者姓名： | 葛建坤 罗金耀 李小平 |
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| 作者单位： | 武汉大学水资源与水电工程科学国家重点试验室; |
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| 基金项目： | 国家自然科学基金项目(50479040) |
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| 摘 要： | 分析了彭曼公式在大棚内的失效性,引入了大棚内修正风速项彭曼公式(陈新明等)以及BP神经网络模型,并利用在湖北省鄂州节水示范基地获得的试验资料,采用上述3种方法对滴灌大棚茄子需水量进行数值模拟与比较分析。分析结果表明,大棚环境内,彭曼公式误差较大,具有失效性;大棚内修正彭曼公式实用性较好;神经网络模型的预测结果精度最高,适应性最好。试验结果对大棚作物需水量模型研究的进一步发展,具有一定参考价值。
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| 关 键 词： | 需水量 修正彭曼公式 神经网络 模拟 |
Quantitative Analysis of Calculation Modeling for Crop Water Requirement in Plastic Tents |
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| GE Jian-kun,LUO Jin-yao,LI Xiao-ping.Quantitative Analysis of Calculation Modeling for Crop Water Requirement in Plastic Tents[J].Journal of Irrigation and Drainage,2009(5). |
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| Authors: | GE Jian-kun LUO Jin-yao LI Xiao-ping |
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| Institution: | GE Jian-kun,LUO Jin-yao,LI Xiao-ping(State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China) |
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| Abstract: | At first,this paper analyzed the catastrophic failure of P-M in greenhouse control,and some new methods to predict water requirement in plastic tent were introduced.The experimental data obtained from E-Zhou Water-saving Irrigation Experiment Station,Hubei Province,were used by three models,such as traditional P-M,P-M-mo amended by Cheng Xin-ming and BP neural network,to simulate the water requirement of eggplant in plastic tents.The measured data of water requirement from the same place,was used to test th... |
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| Keywords: | water requirement amended P-M neural network simulate |
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