[1]杨威,周卫军,胡文敏,等.茶树根际土壤磷吸附动力学研究[J].山地学报,2015,(01):25.
　YANG Wei,ZHOU Weijun,BAO Chunhong,et al.Kinetics Study on Phosphorus Adsorption of Rhizosphere Soils in Tea Garden[J].Mountain Research,2015,(01):25.
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茶树根际土壤磷吸附动力学研究()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2015年01期
页码:
25
栏目:
山地研究
出版日期:
2015-02-01

文章信息/Info

Title:
Kinetics Study on Phosphorus Adsorption of Rhizosphere Soils in Tea Garden
作者:
杨威;周卫军;胡文敏;包春红;杨君;
湖南农业大学资源环境学院;
Author(s):
YANG Wei; ZHOU Weijun; BAO Chunhong; YANG Jun
College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
关键词:
根际土壤; 磷吸附; 种植年限; 母质; 动力学; 茶树
Keywords:
Rhizosphere soil;  phosphorus adsorption;  cultivation years;  soil parent material;  Kinetics
分类号:
S153.3
文献标志码:
A
摘要:
茶树具有喜酸聚铝特性,而酸性条件下土壤中的磷很容易被固定。为了弄清茶树根际土壤磷的吸附过程与作用机理,采用外源磷吸附培养方法,研究了不同母质、不同种植年限茶树根际土壤磷的吸附过程与动力学,并用最小二乘法进行Langmuir等温吸附方程拟合磷吸附动力学曲线,探讨了茶树根际土壤的磷吸附特征。结果表明:茶树根际土壤与非根际土壤磷的吸附过程与动力学有明显的差异。与非根际土壤的相比,茶树根际土壤最大吸附量(Xm)值低56 mg/kg,但是最大缓冲容量(MBC)高2.60,磷吸附饱和度(DPS)高1.44,表明根际土壤磷吸附力显著低于非根际土壤,而磷生物有效性高于非根际土壤。3种成土母质发育的茶园根际土壤...
Abstract:
Characteristics of tea tree favor with accumulation aluminum and acid environment, and phosphorus is very easy to be fixed in acidic soil. In order to explore the phosphorus adsorption processes and reaction mechanism in tea rhizosphere soil, the culture experiment of adding phosphorus was carried out collecting tea rhizosphere soil of different parent materials and planting time in 2011. The phosphorus adsorption processes and its kinetics were studied, the characteristics of adsorption was discussed using the methods of the Langmuir isotherm adsorption curve which was simulated with the least squares method. The results showed that the clear differences of phosphorus adsorption process and dynamics were observed between tea tree rhizosphere soil and nonrhizosphere soil. Compared to nonrhizosphere soil, the maximum phosphate adsorption (Xm) decreased by 56 mg/kg, while the increment of both the maximum buffer capacity (MBC) and the Degree of phosphorus saturation (DPS) was 2.60 and 1.44 in tea rhizosphere soil, respectively. These results suggested that the phosphorus adsorption ability was lower and the phosphorus bioavailability is higher in tea rhizosphere soil than the nonrhizosphere soil. The order of the phosphorus adsorption ability was Quaternary red clay > Granite > the Slate in tea rhizosphere soil which derived different parent material. The DPS of rhizosphere soil was increased, but the MBC and Xm were decrease. with the increase of the planting years. The increment of DPS in turn ware 0.83,2.83 and 3.51,while the Xm decreased by 91 mg/kg,131 mg/kg and 61 mg/kg in three kind parent material rhizosphere soil that were Quaternary red clay, Granite and the Slate.

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相似文献/References:

[1]李明锐,沙丽清.云南保山西庄河流域森林土壤磷吸附特性[J].山地学报,2002,(03):313.

备注/Memo

备注/Memo:
收稿日期(Received date)：2014-04-15；改回日期(Accepted) : 2014-07-25。
基金项目（Foundation item）：国家自然科学基金(编号: 41071204)。[The National Natural Science Fundation of China(No.41071204.]
作者简介（Biography）： 杨威(1988-)，男，硕士研究生，四川宜宾人，主要从事土壤环境过程及其模拟方面的研究。[Yang Wei(1988-),male,Postgraduates,born in Yibin lity Sichuan province,engaged in the process of soil environment and it's simulation.] E-mail:simon881011@yahoo.com.cn *
通信作者(Corresponding author)：周卫军,男,教授(博导)，湖南常德人。[Zhou Weijun,male,Professor(doctoral supervisor) born in Chang de City Hunan provinu.] E-mail: wjzh0108@163.com第1期杨 威，等：
更新日期/Last Update: 1900-01-01