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匹和中低产田块;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。
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.
出处
《生态农业研究》
CSCD
1999年第4期41-43,共3页
Chinese Journal of Eco-agriculture
基金
"九五"国家科技攻关专题"黄淮海平原SARD综合研究"项目资助
关键词
黄淮海平原
集约农区
硝酸盐
污染
地下水
Huanghe-huathe-haihe Plain,Intensive agriculture region,Nitrate,Pollution
