摘要
随着再生水灌溉的迅速发展,再生水灌溉对土壤环境及地下水的影响日益受到人们的关注。通过再生水灌溉田间试验,探讨了不同潜水埋深条件下,再生水灌溉对土壤中硝态氮、铵态氮及地下水中硝态氮的影响。试验结果表明:灌水后,土壤中硝态氮含量均显著增加,相同潜水埋深,灌水水平越高,土壤中硝态氮含量增加越多;灌水后,灌水水平B1不同潜水埋深地下水硝态氮分别增加11.71mg/l、15.82mg/l、15.16mg/l;灌水水平B2不同潜水埋深地下水硝态氮分别增加33.881mg/l、30.37mg/l、25.29mg/l。潜水埋深越深,地下水中硝态氮的浓度增加越小;潜水埋深越浅,地下水中硝态氮的浓度增加越大,由于淋溶和硝化作用产生的硝态氮造成浅层地下水污染的风险越大。
With the development of reclaimed water irrigation,the effect of sewage irrigation in soil and groundwater is attentive by people.By the field expeiment,the effect of reclaimed water irrigation on nitrogen transport of soil and groundwater at different groundwater depth was discussed.The experimental results indicated that the nitriate content of soil obviously increased after irrigation,under the same water depth,the more irrigation amount was the more nitrate content was respectively.Nitrate concentration...
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2009年第2期164-168,共5页
Journal of Arid Land Resources and Environment
基金
国家科技支撑计划(2006BAD17B02)
科技部科研院所社会公益研究专项(2004)510号资助
关键词
再生水
夏玉米
潜水埋深
硝态氮
铵态氮
reclaimed water
summer maize
groundwater depth
NO-3-N
NH+4-N
