| 淹水条件下渗漏强度对稻田TP浓度的影响 |
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| 引用本文： | 邵园园,俞双恩,孙雪梅.淹水条件下渗漏强度对稻田TP浓度的影响[J].水资源保护,2011,27(3):24-27. |
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| 作者姓名： | 邵园园 俞双恩 孙雪梅 |
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| 作者单位： | 1. 河海大学南方地区高效灌排与农业水土环境教育部重点实验室,江苏南京,210098;江苏省秦淮河水利工程管理处,江苏南京,210001
2. 河海大学南方地区高效灌排与农业水土环境教育部重点实验室,江苏南京,210098;河海大学水利水电学院,江苏南京,210098 |
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| 基金项目： | "十一五"国家科技支撑计划，国家自然科学基金 |
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| 摘 要： | 通过蒸渗测坑进行淹水稻田不同渗漏强度控制试验,研究水稻各生育阶段中不同渗漏强度下地表水及地下水TP浓度变化。结果表明:稻田灌水扰动田表土壤颗粒,加速了土壤磷的释放,是淹水过程中地表水TP浓度升高的主要原因,尤其在田表面没有形成板结层之前,灌水或降雨会使土壤磷颗粒大量析出;淹水3—5 d后,由于沉淀作用,地表水TP浓度明显降低;渗漏强度对淹水前期稻田地表水TP浓度影响较为显著,对地下水TP浓度影响不显著。
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| 关 键 词： | 水稻 渗漏强度 TP浓度 显著性 |
| 修稿时间： | 2011/5/27 0:00:00 |
Influence of seepage rate on TP concentration in paddy soil on condition of flooding |
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| SHAO Yuan-yuan,YU Shuang-en,SUN Xue-mei.Influence of seepage rate on TP concentration in paddy soil on condition of flooding[J].Water Resources Protection,2011,27(3):24-27. |
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| Authors: | SHAO Yuan-yuan YU Shuang-en SUN Xue-mei |
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| Institution: | SHAO Yuan-yuan1,2,YU Shuang-en1,SUN Xue-mei1,2(1.Key Laboratory of Efficient Irrigation-Drainage and Agricultural Soil-Water Environment in Southern China,Ministry of Education,Nanjing 210098,China,2.College of Water Conservancy and Hydropower,Hohai University,China) |
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| Abstract: | Through the controlled experiment on seepage rate of the inundated rice paddy by the use of lysimeters,the changes of total phosphorus(TP) concentration of the surface and underground water caused by different seepage rate were studied at various growth stages.The results showed that the main reason of the rising of TP concentration in surface water during irrigation was the disturbance of the topsoil caused by irrigation accelerating the release of soil phosphorus.Especially before the compaction layer was... |
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| Keywords: | paddy rice seepage rate TP concentration significance |
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