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宁夏地下水中硝态氮含量状况及其影响因素研究
贾小妨1,李玉中1,周 涛2,王世荣2,宋吉青1
Study on the Nitrate Content and the Influence Factors of Groundwater in Ningxia
JIA Xiao-Fang
中国农学通报 . 2009, (18): 378 -383 .  DOI: 10.11924/j.issn.1000-6850.2009-0760