| 农田区地下水氮污染和氮转化的实验研究 |
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| 引用本文： | 董悦安,沈照理,钟佐燊.农田区地下水氮污染和氮转化的实验研究[J].北京师范大学学报(自然科学版),2001,37(2):199-204. |
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| 作者姓名： | 董悦安 沈照理 钟佐燊 |
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| 作者单位： | 1. 北京师范大学低能核物理研究所,北京市辐射中心: ,
2. 中国地质大学环境科学系: |
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| 基金项目： | 国家自然科学基金;49232040; |
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| 摘 要： | 为研究不同条件下农田区氮污染和氮转化的过程及结果，进行了4个土柱的模拟实验，模拟菜田施肥（化肥）残存量对地下水氮污染的实验表明，土柱中所施化肥残存量的72．08％和47．44％随下渗水流出，模拟非均质包气带结构对地下水氮污染去除的实验表明，装有4层粘性土夹层的砂柱对硝酸根离子的去除率分别为85．69％（以蒸馏水混合液注入）和32．48％（以地下水混合液注入），而没有粘性土夹层的砂柱对硝酸根离子的去除率则分别为38．25％（以蒸馏水混合液注入）和28．92％（以地下水混合液注入）。
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| 关 键 词： | 氮污染 施肥 包气带结构 农田区地下水 氮转化 砂柱模拟试验 |
| 修稿时间： | 2000年10月27日 |
A STUDY ON THE SAND COLUMN EXPERIMENTS OF NITROGEN POLLUTION AND TRANSFORMATIONIN AGRICULTURAL AREAS |
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| DONG Yuean,Shen Zhaoli,Zhong Zuoshen.A STUDY ON THE SAND COLUMN EXPERIMENTS OF NITROGEN POLLUTION AND TRANSFORMATIONIN AGRICULTURAL AREAS[J].Journal of Beijing Normal University(Natural Science),2001,37(2):199-204. |
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| Authors: | DONG Yuean Shen Zhaoli Zhong Zuoshen |
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| Abstract: | For studying the process and result of nitrogen pollution and transformation in agricultural areas in different situations, four sand column experiments were done. The 72.08% and 47.44% of the total amount of chemical fertilizer go out from the columns in the simulation of using over-burden chemical fertilizer in vegetable area. The removal rate of nitrate is 85.69% in the column Ⅲ and 38.25% in the column Ⅳ when the distilled water mixture (nitrate 100mg*L-1, glucose 106.55mg*L-1) is injected, and that is 32.48% in the column Ⅲ and 28.92% in the column Ⅳ when the groundwater mixture (nitrate 200mg*L-1, glucose 319.63mg*L-1) is injected. |
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| Keywords: | nitrogen pollution and transformation chemical fertilizer sand column experiments removal rate of nitrate |
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