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| 高浓度沼液淹灌土水系统中氮、磷和有机物的动态变化 | |
| 引用本文： | 李松林,吕军,张峰,孙嗣旸,邓欧平.高浓度沼液淹灌土水系统中氮、磷和有机物的动态变化[J].水土保持学报,2011,25(2):125-129. |
| 作者姓名： | 李松林 吕军 张峰 孙嗣旸 邓欧平 |
| 作者单位： | 1. 浙江大学环境与资源学院,杭州,310029 2. 浙江省亚热带土壤与植物营养重点实验室,杭州,310029 3. 浙江大学教育部污染环境修复与生态健康重点实验室,杭州,30029 |
| 基金项目： | 国家自然科学基金项目(No.40821140540) |
| 摘 要： | 通过室内静置培养模拟试验,研究了高浓度沼液淹灌稻田土壤后上覆水和土壤中氮、磷和有机物的动态变化特征。结果表明,全沼液淹灌处理的上覆水中总磷和NH+4-N浓度分别在30 d和50 d内降低到允许排放标准以下;降低灌溉沼液的浓度,可缩短排放达标所需时间;但硝态氮浓度经过迅速下降后又会显著升高,全沼液灌溉处理100 d后,上覆水中NO-3-N的浓度比灌溉初期提高了44.9%。灌溉沼液中污染物浓度的降低,主要是降解和挥发作用的结果,只有少部分留在土壤中。因此,在水田休闲期进行高浓度的沼液淹灌,不仅可以消解和净化沼液中污染物质,还能有效改善土壤养分性质,不会引起土壤中氮、磷和有机物质的过量积累。 |
| 关 键 词： | 沼液 淹灌 土水系统 氮 磷 化学需氧量 有机质 |
Dynamic Changes of Nitrogen,Phosphorus and Organic Matter in Soil-Water System in the Process of Biogas Slurry Flooding Treatment |
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| LI Song-lin,LU Jun,ZHANG Feng,SUN Si-yang,DENG Ou-ping.Dynamic Changes of Nitrogen,Phosphorus and Organic Matter in Soil-Water System in the Process of Biogas Slurry Flooding Treatment[J].Journal of Soil and Water Conservation,2011,25(2):125-129. | |
| Authors: | LI Song-lin LU Jun ZHANG Feng SUN Si-yang DENG Ou-ping |
| Institution: | LI Song-lin1,LU Jun1,ZHANG Feng1,SUN Si-yang2,DENG Ou-ping3(1.College of Environmental Science and Natural Resources,Zhejiang University,Hangzhou 310029,2.Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition,3.China Ministry of Education Key Lab of Environmental Remediation and Ecological Health,Hangzhou 310029) |
| Abstract: | Through indoor-static-culture simulation experiment,we studied the dynamics of nitrogen,phosphorus and organic matter in the overlying water and the paddy soil during the flooding of high concentration biogas slurry from livestock wastewater.Results showed that the concentrations of TP and NH+4-N in overlying water for the total biogas slurry irrigation treatment were decreased to below the allowable discharge standards in 30 days and 50 days,respectively.With the reducing of the concentration of biogas slu... |
| Keywords: | biogas slurry flooding soil-water system nitrogen phosphorus COD organic matter |
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