紫色土NH4^+、NO3^-的吸附-解吸特性研究
文献类型:期刊论文
作者 | 朱波![]() |
刊名 | 土壤肥料
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出版日期 | 2006 |
期号 | 2页码:19-22 |
关键词 | 紫色土 NH4^+ NO3^- 吸附 解吸 土壤流失 |
其他题名 | Research on the adsorption and desorption characteristics of ammonia and nitrate in purple soil |
通讯作者 | 谢红梅 |
合作状况 | 其它 |
中文摘要 | 试验在25±1℃恒温条件下研究了紫色土NH4^+、NO3^-的吸附-解吸特征。结果表明,紫色土对NH4^+、NO3^-的等温吸附曲线与Freundlich模型相关性强,均达到极显著水平。在低浓度时,NH4^+、NO3^-的等温吸附线斜率较大;在高浓度时,等温吸附线趋于平缓;土壤吸附态NH4^+、NO3^-的解吸曲线与Freundlich方程拟合度高,达到极显著水平,而与Langmiur合较差;通过K吸附和K解吸值的大小比较,找出了土壤NO3^-比NH4^+更易于流失的根本原因。 |
英文摘要 | The adsorption and desorption characteristics of ammonia and nitrate in purple soil were researched in this paper under the condition of 25±1℃ .The result showed that both ammonia and nitrate adsorption cHIVes could be well de— scribed by Fleundlich equation, however, the isothermal adsorption of ammonia and nitmte bv purple soil fitted bad ].~lgnliur equation.In lOW concentration the slop of adsorption curves on ammonia and nitrate were high . WitII the increase of concentration the adsorption curves of ammonia and nitrate were smoothness. The isothenm l desorption of oln— rnonia and nitrate fitted well with Fleundlich equation rather than L~lgmiur equation;Compared with the values of Kads and l(deB between ammonia and nitrate the critical reason that nitrate move mole easily than ammonia WaS found. |
分类号 | S153 |
资助信息 | 中科院知识创新工程重大项目(KZCX2-413);四川省青年科技基金;四川省科技攻关计划(04NG020-015)《稻田保护性耕作关键技术研究与示范》;国家863节水农业项目(2002AA2Z4266)《节水农业效益评估方法研究与指标体系构建》 |
语种 | 中文 |
公开日期 | 2010-08-16 |
源URL | [http://ir.imde.ac.cn/handle/131551/1440] ![]() |
专题 | 成都山地灾害与环境研究所_成都山地所知识仓储(2009年以前) 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
推荐引用方式 GB/T 7714 | 朱波. 紫色土NH4^+、NO3^-的吸附-解吸特性研究[J]. 土壤肥料,2006(2):19-22. |
APA | 朱波.(2006).紫色土NH4^+、NO3^-的吸附-解吸特性研究.土壤肥料(2),19-22. |
MLA | 朱波."紫色土NH4^+、NO3^-的吸附-解吸特性研究".土壤肥料 .2(2006):19-22. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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