1) N and P non-point source pollution
氮磷面源污染
1.
N and P non-point source pollution status quo of vegetable fields at the suburb of Fuzhou city was evaluated by testing samples of vegetable (120 samples), surface-field water (16 samples) and groundwater (11 samples) collected from 14 pieces of vegetable fields which located at the suburb of that city according to the related criterions in this paper.
通过对福州市郊14片蔬菜基地的120个蔬菜样品、16个田面水样和11个地下水样的检测,并引用相关评价标准,分析了福州市郊菜地氮磷面源污染现状。
2) nitrogen non-point field pollution
农田氮面源污染
1.
After summarizing studies about nitrogen fertilizer non-point pollution in China, the type of nitrogen non-point field pollution was regionalized.
在总结国内有关农田氮面源污染研究结果的基础上,对我国农田氮面源污染类型进行了区划,将全国划分为12个一级农田氮面源污染类型区,并进一步合并为3大类区域;定义了肥料氮污染指数的计算方法,在此基础上,利用近年各省氮肥施用的统计资料,对各省农田氮面源污染现状进行了初步分析。
3) N and P pollution
氮磷污染
1.
② Spatial variations of N and P pollution were observed, as the creeks in different places accepted different types and amounts of pollutants.
②由于受纳污染物类型和总量上的差异 ,中小河流氮磷污染存在明显的空间分异 :居民区附近的小河流氨氮和磷的污染很重 ;主要受农田径流影响的小河流 ,氨氮和磷的污染较轻 ,但受硝氮污染的风险加大 ;养殖场附近的小河流 ,氨氮和磷有突发性暴增的现象 。
4) nitrogen pollution sources
氮污染源
5) nitrogen and phosphorus non-point source pollution
氮磷面源
1.
This paper systematically analyses effects of different crops(Zizania latifolia、lotus、chufa)and proportions(1∶5、1∶10、1∶20) to control nitrogen and phosphorus non-point source pollution from hill region paddy field on field experiment.
针对丘陵区稻田排放的氮磷面源污染,在田间试验基础上,系统地分析了不同水生经济作物(茭白、莲藕、荸荠)、不同湿地配置比例(1∶5、1∶10、1∶20)对其的净化效果。
6) non-point source pollution
面源污染
1.
Application of grassed swales in urban non-point source pollution control;
植草沟在城市面源污染控制系统的应用
2.
SWAT simulation of effect of stream water quality on non-point source pollution;
基于SWAT模型的流域面源污染模拟影响分析
3.
Effectiveness of rural environmental education on non-point source pollution control;
农村环境教育在控制农村面源污染中的作用
补充资料:面源污染
分子式:
CAS号:
性质: 一般是指无固定与集中的排放口或排放点,在一定区域面积内广泛分布的污染源对环境造成的污染。例如农田灌溉或雨水地面径流中农药、氯、磷等污染物对水环境的污染,酸雨的污染,工业生产无组织排放对大气环境的污染等。排放废气的低矮点源(高度<15m),当其分布较密集时,通常也划归面源。
CAS号:
性质: 一般是指无固定与集中的排放口或排放点,在一定区域面积内广泛分布的污染源对环境造成的污染。例如农田灌溉或雨水地面径流中农药、氯、磷等污染物对水环境的污染,酸雨的污染,工业生产无组织排放对大气环境的污染等。排放废气的低矮点源(高度<15m),当其分布较密集时,通常也划归面源。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条