| 青铜峡灌区土壤中三氮及盐分变化特征分析 |
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| 引用本文： | 陈伟伟,李强坤,孙娟,胡亚伟.青铜峡灌区土壤中三氮及盐分变化特征分析[J].干旱区资源与环境,2011(9):102-105. |
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| 作者姓名： | 陈伟伟 李强坤 孙娟 胡亚伟 |
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| 作者单位： | 黄委会黄河水利科学研究院; |
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| 基金项目： | 国家自然科学基金项目(50879027); 中央级公益性科研院所基本科研业务费专项资金(HKY-JBYW-2010-17)资助 |
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| 摘 要： | 以宁夏青铜峡灌区田间土壤中非点源污染物（总氮、硝氮、氨氮和盐分）作为研究对象,对土壤剖面进行分析。结果表明：表层土壤中各类污染物含量变化较大,基本上以60 cm深度为分界线,下层变化较小,而且作物生长期前后土壤中不同深度各类污染物含量变化与灌溉过程、施肥强度等关系密切;土壤中三氮含量变化幅度呈硝氮〉氨氮〉全氮的趋势,总...
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| 关 键 词： | 灌区 田间土壤 三氮 盐分 变化特征 |
Variation feature of three kinds of nitrogen and salt in soils of Qingtongxia irrigation area |
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| CHEN Weiwei,LI Qiangkun,SUN Juan,HU Yawei.Variation feature of three kinds of nitrogen and salt in soils of Qingtongxia irrigation area[J].Journal of Arid Land Resources and Environment,2011(9):102-105. |
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| Authors: | CHEN Weiwei LI Qiangkun SUN Juan HU Yawei |
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| Institution: | CHEN Weiwei,LI Qiangkun,SUN Juan,HU Yawei(Yellow River Institute of Hydraulic Research,YRCC,Zhengzhou 450003,P.R.China) |
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| Abstract: | Agricultural non-point source pollution is becoming the major cause of the environment deterioration.It has been researched in our country since 1980's,and now it becomes a research hotpot.An experiment was done to study non-point source pollutants from field soil in Qingtongxia irrigation area,Ningxia.Based on this experiment,we tried to find out TN,NO-3-N,NH+4-N and salt content changes in soil profile.The result showed that:(1)The content of various pollutants in surface soil changed greatly,and changed ... |
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| Keywords: | irrigation area field soil three kinds of nitrogen salt variation feature |
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