| 畦灌撒施与液施硫酸铵地表水流和土壤中氮素时空分布特征 |
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| 引用本文： | 白美健,许迪,李益农,章少辉.畦灌撒施与液施硫酸铵地表水流和土壤中氮素时空分布特征[J].农业工程学报,2011,27(8):19-24. |
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| 作者姓名： | 白美健 许迪 李益农 章少辉 |
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| 作者单位： | 国家节水灌溉工程技术研究中心,北京100044;中国水利水电科学研究院水利研究所,北京100044 |
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| 基金项目： | 国家863计划重点项目课题（2006AA100210，2006AA100221），中国水利水电科学研究院科研专项（节集0809） |
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| 摘 要： | 分析不同灌溉施肥方式下氮素时空分布特征可为改进畦灌施肥技术与方法提供科学依据。该研究基于冬小麦返青灌溉开展的不同入畦流量下撒施和液施硫酸铵时获得的畦灌试验观测结果，分析2种不同施肥方式下地表水流和土壤中氮素时空分布规律，讨论不同施肥方式下影响灌后土壤氮素空间分布均匀性的要素。结果表明，施肥方式对地表水流和土壤中氮素分布影响显著，入畦流量对其影响不显著。液施下地表水流中氮素时空分布差异不显著，撒施下具有明显时空变异性；液施能明显改善灌后土壤氮素空间分布均匀性，灌后1 d 1m土层内氮素空间变异系数为0.07，明显小于撒施。土壤氮素增量分布均匀性在液施下主要与灌水量分布有关，撒施下则与地表水流中氮素分布和灌水量分布有关。液施在提高施肥均匀性和减小灌溉期间肥的损失方面优于撒施，且更易于水肥联合管理。
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| 关 键 词： | 氮素，撒施，肥料，液施，硫酸铵，时空分布 |
| 收稿时间： | 2010/9/10 0:00:00 |
| 修稿时间： | 2011/6/30 0:00:00 |
Spatial and temporal distribution of nitrogen in surface water and soil under scattering and fertigating ammonium-sulphate for border irrigation |
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| Bai Meijian,Xu Di,Li Yinong and Zhang Shaohui.Spatial and temporal distribution of nitrogen in surface water and soil under scattering and fertigating ammonium-sulphate for border irrigation[J].Transactions of the Chinese Society of Agricultural Engineering,2011,27(8):19-24. |
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| Authors: | Bai Meijian Xu Di Li Yinong and Zhang Shaohui |
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| Institution: | Bai Meijian1,2,Xu Di1,Li Yinong1,Zhang Shaohui1,2 (1. National Center of Efficient Irrigation Engineering and Technology Research,Beijing 100044,China,2. Irrigation and Drainage department,China Institute of Water Resources and Hydropower Research,China) |
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| Abstract: | Based on the field experiments for different fertilizing methods and inflow rates in the greening period of winter wheat, the spatial and temporal distribution of Nitrogen in soil and surface water were analyzed, and the factors affecting the distribution uniformity of Nitrogen in soil after irrigation were discussed. The results showed that the influence of inflow rate on the distribution of Nitrogen were not obvious, however the fertilizing methods had obvious effects on it. Under fertigation the spatial ... |
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| Keywords: | nitrogen scattering fertilizers fertigating ammonium-sulphate spatial and temporal distribution |
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