WU Xiangdong,,LI Fadong,GUO Jianqing,LIU Qiang,SONG Shuai,,ZHAO Guangshuai.黄河下游引黄灌区主要河系硝态氮及铵态氮安全评价Journal of Water Resources and Water Engineering[J].,2011,22(4):
黄河下游引黄灌区主要河系硝态氮及铵态氮安全评价
Security evaluation of nitrate and ammonium nitrogen in main river reaches of irrigation districts in downstream of Yellow River
This paper investigated water chemical characteristics and the contamination of nitrate nitrogen and ammonium nitrogen in main river reaches of Dezhou irrigation district.The results indicated that pH,electrical conductivity,nitrate nitrogen(NO-3-N) and ammonium nitrogen(NH+ 4-N) varied spatially.Serious contamination by NO-3-N was found in the Weiyun and Zhangweixin Rivers with strip-flume along these rivers.Lower values were measured in the Majia and Tuhai Rivers due to water-transfer from the Yellow Rive...