摘要
硝酸盐污染是地下水普遍的水质问题。通过对滇池流域地下水监测,分析硝酸盐污染的流域分布、超标情况,评价了硝酸盐污染现状,探讨了硝酸盐污染与施用氮肥之间的关系。得出滇池流域地下水硝酸盐属于III类标准(2 0～20mg/L)仅为30%,IV类(20～30mg/L)为20%,V类(≥30mg/L)为50%,地下水硝酸盐合格率仅为30%。从地理分布来看,呈贡地下水硝酸盐污染较官渡区、晋宁严重,滇池流域地下水硝酸盐含量与氮肥施用量有明显的相关性。
Nitrate contamination is a common problem of groundwater quality The article analyzes the division and exceeding criterion situation of nitrate contamination, evaluates the present nitrate contamination, discusses the relation of nitrate contamination and nitrogenous fertilizer apply The result is nitrate belonging to III is only 30%, belonging to IV is 20%, belonging to V is 50% Nitrate contamination in Chenggong district is more serious than Guandu district and Jinning district The relationship of nitrate contamination and nitrogenous fertilizer apply is closely correlated
出处
《云南地理环境研究》
2003年第4期39-42,共4页
Yunnan Geographic Environment Research
