黄淮海平原典型集约农区地下水硝酸盐污染初探

基金项目: “九五”国家科技攻关专题“黄淮海平原SARD综合研究”项目资助

Investigation on nitrate pollution in ground water at intensive agricultural region in Huanghe-huaihe-haihe Plain

摘要: 对黄淮海平原典型集约农区N肥污染地下水的初步调查表明，该区地下水硝酸盐(NO^-₃)污染较严重，高产农区和高产田块污染程度明显高于中低产区和中低产田块；菜地污染程度较粮田严重；随着施N时间的推移和施用量的增加，地下水中硝态氮具有明显的积累趋势，潜在污染不容忽视；地下水NO^-₃含量与N肥施用量呈明显正相关关系。
- 黄淮海平原 /
- 集约农区 /
- 硝酸盐 /
- 污染
Abstract: Results obtained from investigation at intensive agricultural region in Huanghe-Huaihe-Haihe Plain demonstrate that nitrate pollution of ground water is serious in high-yield agricultural region and in high-yield farmland.Nitric nitrogen content in ground water is higher in vegetable-land than in grain land.Nitrate content in ground water accumulates obviously with the increase of N-fertilizer applied,so the potential pollution should not be ignored.Nitric nitrogen content in ground water has positive relation with the amount of N-fertilizer applied.
- Huanghe-huaihe-haihe Plain /
- Intensive agriculture region /
- Nitrate /
- Pollution