柘皋河流域农田土壤氮磷迁移过程的模拟研究
郑志侠;宋马林
【期刊名称】《安徽农业科学》 【年(卷),期】2011(039)013
【摘要】[ Objective ] The research aimed to study the migration and transformation process of nitrogen and phosphorus in surface soil.[ Method ] Simulated rainfall experiments were carried out in rice fields, vegetable fields and dry lands from Zhegan River watershed in order to study the characteristics of transfer laws of nitrogen and phosphorus in interflow and leachate under different fertilizer levels and rainfall intensifies. [ Result] NH3-N had a strong adsorption and transformation in the soil mainly in the surface, while migration and conversion process of NO3-N had a close relationship with hydraulic conditions and soil characteristics. The average concentration of TP in vegetable fields interflow was 0.52 mg/ml, which was far beyond of control requirements of the Chaohu Lake. [ Conclusion ] Effective control of the migration of nitrogen and phosphorus in interflow in addition to surface runoff was very crucial to water pollution control and management of Zhegao River watershed.%[目的]研究土壤表层氮、磷迁移变化机理.[方法]选取柘皋河流域为试验区,以流域3种主要土地利用类型为研究对象,采用人工模拟降雨方法,在不同施肥量、降雨强度条件下研究了氮、磷在壤中流、渗漏液的迁移规律.[结果]氨氮在土壤中具有很强的吸附和转化能力,
柘皋河流域农田土壤氮磷迁移过程的模拟研究
