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《Journal of Anhui Agricultural Sciences》 2009-14
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Distribution and Analysis of Formation Cause of "Three-Nitrogens" of Shallow Groundwater in Henan Province

WEI Xiu-qin(Henan Monitoring Institute of Geological Environment,Zhengzhou,Henan 450016)  
Based on actually investigation of water quality in plain area of Henan Province in recent years,nitrogen pollution in shallow groundwater is main nitrate-nitrogen(NO-3-N)and nitrite-nitrogen(NO-2-N).The over standard districts of nitrogen pollution are situated in the middle Huang-huai-hai plain and Nanyang basin,where the population is denser,industry and agriculture are developed and utilization degrees of groundwater is better,and their total area is about 24% and 15% of plain areas.The pollution of nitrate-nitrogen(NO-3-N)is gradually worse,nitrate radical groundwater has been found.The reason of pollution worse is free stack of industrial three-wastes,city domestic wastewater and over used fertilizers and pesticides.
【Fund】: 河南省政府基金(豫财建[2004]219号)
【CateGory Index】: X523
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