摘要:通过连续和间歇一维垂直入渗试验，研究了波涌灌灌施尿素下铵态氮和硝态氮在土壤和地下水中的迁移转化特性，表明波涌灌间歇入渗较连续入渗有保肥和减小地下水污染等优点，可以有效缓解农业施肥带来的地下水环境污染。该研究成果为进一步研究波涌灌溉水氮运移特性和波涌灌溉对地下水环境的影响奠定基础。

关键词:波涌灌  间歇入渗  尿素  水氮运移

AbstractThe transforming characteristics of NH₄⁺ and NO₃^- in soil and groundwater were analyzed through continuous and intermittent onedimensional vertical infiltration test under surge fertigation with urea. The results showed that intermittent infiltration was superior to continuous infiltration in retaining fertilizer and it could relieve the pollution of groundwater caused by agricultural fertilization. The research results laid foundatio n for further study of the transforming characteristics of water and urea and the environmental effects of groundwater under surge irrigation.

Key wordssurge irrigation  intermittent infiltration  transformation of water and nitrogen  urea

文章编号： 0258_7106 (2016) 01_0018_15 中图分类号： P618.41 文献标志码：A

改回日期：2015_07_11

基金项目

**通讯作者耿新霞， 女， 1979年生， 助理研究员， 成矿规律研究方向。 Email： gen gxinxia@cags.ac.cn