高太忠;付海燕;

• 1:河北科技大学环境科学与工程学院
• 2:河北省污染防治生物技术重点实验室

摘要(Abstract)：

为揭示氮在土壤包气带中的迁移转化规律并确定其数学模型,通过室内土柱淋滤试验研究了碳酸氢铵及尿素2种氮肥在土壤中的迁移转化过程,并测定了不同时间土壤中氨氮、亚硝酸盐氮和硝酸盐氮的质量浓度变化,总结了"3氮"在包气带中的迁移转化规律。结果表明,施氮周期内褐土土柱淋滤液中,氨氮最高质量浓度为13.33mg/L,硝酸盐氮为15.25 mg/L(H-N-1土柱),土壤中氨氮吸附作用大于硝酸盐氮。建立了氮在土壤中的迁移转化模型并确定了模型参数,可以用所建模型对氮在河北平原包气带中的迁移过程进行定量预测。

关键词(KeyWords)： 环境学;氨氮;硝酸盐氮;包气带;迁移转化;河北平原

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41373096);; 中国地质大学生物地质与环境地质教育部重点实验室开放基金项目(BGEG1005);; 河北省污染防治生物技术重点实验室基金项目(2012015)

作者(Authors): 高太忠;付海燕;

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