广东某粮食基地土壤酸性条件对地下水质量影响

Influence of Acid Soil on the Quality of Groundwater in a Cereal Base of Guangdong Province

研究了广东省某粮食基地土壤中的全氮和浅层地下水中氨氮的关系,发现土壤酸性—强酸性环境条件和高铁锰的第四系全新统现代滩涂沉积为农业区地下水氨氮局部污染提供了环境条件。而不合理的施用氮肥是地下水氨氮长期面状污染的主要来源。

This paper put the focus on the realationship between nitrogen in surface soil and ammonia nitrogen in shallow groundwater. It is found that acidic strongly acidic soils and Quaternary Holocene mudflat sediments which are high in Fe and Mn contents provided geochemical conditions for local pollution of ammonia nitrogen in shallow grotmdwater. And unreasonable application of nitrogen fertilizers would lead to long term and vast scale pollution.