水资源与水工程学报2016，Vol.27Issue(1)：227-231,5.DOI:10.11705/j.issn.1672-643X.2016.01.42
不同灌溉模式下太湖流域稻田土对氨氮的吸附特性
Adsorption characteristics of paddy soil to ammonia nitrogen in Taihu lake basin under different irrigation patterns
摘要
Abstract
In order to investigate the influence of irrigation pattern on paddy soil adsorption to ammonia,the paper collected the paddy soil in Taihu Lake basin under different irrigation patterns to carry out adsorption experiment in laboratory.Results showed that the adsorption dynamic processes on two kinds of paddy soil could be divided into fast stage and slow stage.The result fitted by pseudo-second-order rate equation is the optimum;the theoretic equilibrium adsorptive capacity and experiment equilibrium adsorptive capacity of paddy soil to ammonia nitrogen under controlling irrigation pattern are 454.5mg/kg and 446.2mg/kg,respectively,which is higher than that under flooding irrigation pattern.The result of isothermal adsorption data fitted by Freundlich equation is the best.Under the mode of controlling irrigation,the unhomogeneity,reaction strength of absorbing ammonia nitrogen and adsorption capacity of paddy soil all raised.关键词
灌溉模式/稻田土/氨氮/氨氮的吸附/太湖流域Key words
irrigation pattern/paddy soil/ammonia nitrogen/adsorption of ammonia nitrogen/Taihu lake basin分类
农业科技引用本文复制引用
吕学研,吴时强,戴江玉,张咏..不同灌溉模式下太湖流域稻田土对氨氮的吸附特性[J].水资源与水工程学报,2016,27(1):227-231,5.基金项目
国家水体污染控制与治理科技重大专项项目(2012ZX07506-003) （2012ZX07506-003）
河海大学水文水资源与水利工程科学国家重点实验室开放基金(2014491411) （2014491411）
水利部公益性行业科研专项经费项目(201301041) （201301041）
国家自然科学基金项目(51309156、51479120) （51309156、51479120）
