摘要
对3个污染类型区域农田氮肥污染典型研究案例进行了归纳和分析,讨论各类型区污染特点。结论如下:东北区、北东区、青藏区、北西区、西南区和四川盆地区,总体上都不属于肥料污染区;西北区属潜在污染区,如不能制定合理的灌溉定额和控制大水漫灌,养分淋失将很严重;黄淮海区和江淮区,由于肥料的使用量超标比较普遍,因而已经发生轻度或中度污染;长江三角洲区、东南丘陵区和华南丘陵区,均属于高肥高水区,为重度污染区。文章最后对氮素污染的基本现状和发展趋势做了总结和展望。
Cases of nitrogen fertilizer non-point field pollution was concluded and analysed in the three types of nitrogen fertilizer non-point pollution, and traits for every type were concluded. Results were as follows： northeast, eastnorth, Qingzang, westnorth, southwest and Sichuan pan section, these sections were non-fertilizer pollution areas; northwest section was potential contaminated area, the fertilizer filter would be severity if the type of irrigation was not improved; Huanghuihai and Jianghuai area have were middle pollution area, for high dosage fertilizer using; Yangtse fire＇s triangle, south-east highland, south highland had high fertilizer and water using, which belonged to severe pollution area. In the last part of paper, we concluded and outlooked the basically the status quo and development trend of nitrogen pollution.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2009年第7期1341-1345,共5页
Journal of Agro-Environment Science
基金
国家环境保护局资助
关键词
中国
农田氮肥面源污染
类型区
污染程度
趋势
China
nitrogen non-point field pollution
type area
pollution extent
trend
