环境保护科学2025，Vol.51Issue(1)：123-130,8.DOI:10.16803/j.cnki.issn.1004-6216.202402042
农业活动密集区氮污染排放特征及管控
Characteristics and control of nitrogen pollution in intensive agricultural activity areas
摘要
Abstract
The average mass concentration of total nitrogen in Menlou Reservoir of Yantai in recent 10 years was 6.14 mg/L,higher than the national level,which seriously affected the safety of water supply and people's health.To clarify the characteristics of nitrogen pollution discharge in Qingyang River Basin,field investigation and location monitoring were carried out.The results showed that in the study area,agricultural activities were intensive,industrial point sources were few,and apple planting was the leading industry.The average nitrogen fertilizer application amount was 483 kg/(hm2·a),which was 42.9%higher than the scientific nitrogen application amount to ensure the current yield.The nitrogen surplus from agricultural non-point sources was higher,reaching 269.9 kg/(hm2·a),and the nitrogen emission from agricultural non-point sources accounted for 81.6%.In order to further effectively prevent the leakage of unused nitrogen,reduce the loss of nitrogen from agricultural non-point sources,and thus improve the water quality of Menlou Reservoir,it is necessary to innovate the planting mode in the basin,mainly promote urea,ammonium sulfate inorganic fertilizers and plant-derived organic fertilizers,advocate straw returning to the field and raw grass mulching,and construct farmland backwater treatment projects and water ecological restoration projects.关键词
农业面源/清洋河流域/氮素来源/氮污染/管控Key words
agricultural non-point sources/Qingyang River Basin/nitrogen source/nitrogen pollution/control分类
资源环境引用本文复制引用
李斌,徐华,高明瑜,丁晶琳,王刚..农业活动密集区氮污染排放特征及管控[J].环境保护科学,2025,51(1):123-130,8.基金项目
山东省自然科学基金资助项目(ZR202102220203) （ZR202102220203）
烟台市科技创新发展计划战略研究类项目(2023ZLYJ122) （2023ZLYJ122）
