| 王少丽,许 迪,S.O.Prasher,Ali Madani.施用有机氮肥条件下地下排水中硝态氮流失的模拟研究[J].水利学报,2006,37(1):0089-0096 |
| 施用有机氮肥条件下地下排水中硝态氮流失的模拟研究 |
| Evaluation of SWAP-MANIMEA model for predicting NO-3-N leaching from hog waste manured plots |
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| DOI： |
| 中文关键词: SWAP模型 MANIMEA模型 地下排水量 硝态氮 有机肥 |
| 英文关键词: SWAP model MANIMEA model drainage flow nitrate-nitrogen hog waste manure |
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| 摘要点击次数: 2447 |
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| 中文摘要: |
| 将改进的有机氮肥管理模型(MANIMEA)与广为应用的土壤水流运动模型(SWAP)相耦合，用于模拟评价施用猪粪条件下NO-3-N(硝态氮)通过地下排水的流失量。采用加拿大新斯科舍省农业大学试验站4个试验地块1999年的日地下排水量及NO-3-N流失量观测值对模型进行了模拟验证。模拟结果表明，预测的日地下排水量与观测的地下排水量吻合较好，相关系数在0.73～0.78之间；日NO-3-N流失量与地下排水量的关系密切，4个试验地块NO-3-N流失量模拟值与观测值平均误差在-0.017kg/hm2和005kg/hm2之间，绝对平均误差范围在0.087kg/hm2和0.152kg/hm2之间。模拟时段NO-3-N总流失量与观测值的相对误差在-0.5%和8.9%之间。总体来说，图形显示和统计指标分析表明，MANIMEA模型具有良好的模拟性能，模型能够较好的预测地下排水中NO-3-N流失量。 |
| 英文摘要: |
| The modified Manurial Nitrogen Management: Environmental Aspects(MANIMEA) model was coupled with Soil-Water-Atmosphere-Plant(SWAP) model to simulate and evaluate the NO-3-N transport to subsurface drainage from hog waste manured plots. SWAP was used to simulate the vertical transport of water flow and heat, the outputs of the model were used as inputs of MANIMEA. The field data obtained in Truro, Nova Scotia, Canada, on 4 test plots were used to test the models. It was found that the predicted daily drainage flow was in good agreement with observed data and the daily NO-3-N losses was closely related to subsurface drainage. Total simulated NO-3-N losses for four plots were within -0.5% and 8.9% of observed values with correlation coefficient 0.64～0.74. The results showed that the model has the potential of predicting nitrate leaching. It can be forecasted that modified MANIMEA model would be an effective tool for predicting fate and transport of nitrogen from manured land. |
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