郑州郊区菜地氮磷在酸雨影响下流失特征研究  

Characteristics of Nitrogen and Phosphorus Loss under Acid Rain of Zhengzhou Suburban Vegetable Fields

作　　者：张明磊[1] 万红友[1] 李桂荣[1] 万云蕾[1] 

机构地区：[1]郑州大学水利与环境学院,河南郑州450001

出　　处：《安徽农业科学》2011年第17期10321-10323,共3页Journal of Anhui Agricultural Sciences

基　　金：河南省教育厅自然科学基础研究计划项目(2009B61008)

摘　　要：采用实验室人工模拟酸性降雨方法,以普通农田土壤作对比,研究郑州市惠济区常规菜地和大棚菜地土壤氮磷在酸雨影响下的流失特征。结果表明,径流中磷素浓度随着降雨时间的延长逐渐减小,氮素浓度随降雨时间变化不明显;氮素主要以颗粒态氮和硝态氮形态流失,磷素主要以颗粒态流失;大棚菜地的氮磷流失量明显大于常规菜地,常规菜地和普通农田的氮磷流失量比较接近。By means of artificial simulation ol the acid rainlall m laboratory, taking ordinary agricultural SOl1 to contrast, ciaaractenstlcs oI m- trogen and phosphorus loss under the acid rain in conventional vegetable soil and greenhouse vegetable soil of Huiji District, Zhengzhou City were studied. The results show that as the rainfall time went on, the concentration of phosphorus in runoff reduced gradually, and the concen- tration of nitrogen didn＇t change significantly. Nitrogen loss was mainly in nitrate and particulate form, and phosphorus loss was mainly in par- tieulate form. The amount of nitrogen and phosphorus loss in greenhouse vegetable soil were significantly greater than those in conventional vegetable soil, and the amount of nitrogen and phosphorus loss in conventional and ordinary vegetable soil were approximate.

关 键 词：菜地 酸雨 氮流失 磷流失 

分 类 号：S42[农业科学—植物保护]