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不同类型农田土壤对可溶性有机氮、碳的吸附特性
引用本文:赵满兴,周建斌,陈竹君,郑险峰.不同类型农田土壤对可溶性有机氮、碳的吸附特性[J].应用生态学报,2008,19(1):76-80.
作者姓名:赵满兴  周建斌  陈竹君  郑险峰
作者单位:1. 西北农林科技大学资源环境学院,陕西杨凌,712100;延安大学生命科学学院,陕西延安,716000
2. 西北农林科技大学资源环境学院,陕西杨凌,712100;农业部植物营养与养分循环重点实验室,北京,100081
3. 西北农林科技大学资源环境学院,陕西杨凌,712100
基金项目:国家自然科学基金 , 西北农林科技大学校科研和教改项目
摘    要:研究了陕西关中地区红油土和淋溶褐土耕层土壤对分离的有机肥提取液中可溶性有机氮、碳(SON和SOC)的吸附特性.结果表明:原始物质吸附等温线方程可以反映土壤对可溶性有机氮、碳的吸附特性,土壤吸附SON、SOC的数量与它们各自加入的量呈极显著线性关系.从原始物质吸附等温线方程的分配系数m看,淋溶褐土对SON、SOC的吸附能力强于红油土.红油土对SON、SOC的平均吸附率分别为24.3%和18.8%,淋溶褐土则分别为38.3%和18.6%;两种类型土壤对SON和SOC的吸附能力较低,说明它们在土壤中具有较强的移动性;土壤对SOC的吸附能力弱于SON,说明SOC更易于从土壤中流失.

关 键 词:农田土壤  可溶性有机氮  可溶性有机碳  吸附特性  原始物质吸附等温线  类型  农田土壤  可溶性有机氮  吸附特性  soils  nitrogen  organic  carbon  characteristics  流失  移动  吸附率  吸附能力  分配系数  线性关系  自加  土壤吸附  吸附等温线方程  物质  结果  提取液
文章编号:1001-9332(2008)01-0076-05
收稿时间:2006-12-28
修稿时间:2007-11-20

Adsorption characteristics of soluble organic carbon and nitrogen in two cultivated soils
ZHAO Man-xing,ZHOU Jian-bin,CHEN Zhu-jun,ZHENG Xian-feng.Adsorption characteristics of soluble organic carbon and nitrogen in two cultivated soils[J].Chinese Journal of Applied Ecology,2008,19(1):76-80.
Authors:ZHAO Man-xing  ZHOU Jian-bin  CHEN Zhu-jun  ZHENG Xian-feng
Institution:College of Resource & Environment Sciences, Northwest A & F University, Yangling 712100, Shaanxi, China. zhao-manxing@163.com
Abstract:In this paper, soluble organic carbon (SOC) and nitrogen (SON) were extracted from manure, and their adsorption characteristics in Argosols and Anthrosols in Guanzhong region of Shaanxi Province were investigated. The results showed that the adsorption of SON and SOC in the two soils could be fitted by initial mass isotherm model, and the adsorbed amounts of SON and SOC had a significant linear relationship with the initial concentrations of SON and SOC added into soils. The partition coefficient, m of the initial mass isotherm model, indicated that Argosols had a higher adsorbility than Anthrosols. The average adsorption rates of SON and SOC in Anthrosols were 24.3% and 18.8%, and those in Argosols were 38.3% and 18.6%, respectively. The low adsorption rates of SON and SOC indicated their high mobility in the two soils, and more SON was adsorbed than SOC suggested the higher potential of SOC leaching from soil.
Keywords:
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