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有机酸对暗棕壤磷的持续释放效应及其动力学特征

宋金凤 刘星平 孙金兵 黄文斌 马瑞 崔晓阳

宋金凤, 刘星平, 孙金兵, 黄文斌, 马瑞, 崔晓阳. 有机酸对暗棕壤磷的持续释放效应及其动力学特征[J]. 北京林业大学学报, 2015, 37(10): 1-8. doi: 10.13332/j.1000-1522.20140008
引用本文: 宋金凤, 刘星平, 孙金兵, 黄文斌, 马瑞, 崔晓阳. 有机酸对暗棕壤磷的持续释放效应及其动力学特征[J]. 北京林业大学学报, 2015, 37(10): 1-8. doi: 10.13332/j.1000-1522.20140008
SONG Jin-feng, LIU Xing-ping, SUN Jin-bing, HUANG Wen-bin, MA Rui, CUI Xiao-yang.. Sustained release and the kinetics of phosphorus from dark brown forest soils by organic acids.[J]. Journal of Beijing Forestry University, 2015, 37(10): 1-8. doi: 10.13332/j.1000-1522.20140008
Citation: SONG Jin-feng, LIU Xing-ping, SUN Jin-bing, HUANG Wen-bin, MA Rui, CUI Xiao-yang.. Sustained release and the kinetics of phosphorus from dark brown forest soils by organic acids.[J]. Journal of Beijing Forestry University, 2015, 37(10): 1-8. doi: 10.13332/j.1000-1522.20140008

有机酸对暗棕壤磷的持续释放效应及其动力学特征

doi: 10.13332/j.1000-1522.20140008
基金项目: 

国家自然科学基金项目(31370613)、“973”国家重点基础研究发展计划项目(2011CB403202)、国家自然科学基金重点项目(40930107)。

详细信息
    作者简介:

    宋金凤,博士,副教授。主要研究方向:森林土壤学与土壤生态学。Email:songnefu@126.com 地址:150040 黑龙江省哈尔滨市香坊区和兴路26号东北林业大学林学院。 责任作者: 崔晓阳,教授,博士生导师。主要研究方向:森林土壤学与土壤生态学。Email:c_xiaoyang@126.com 地址:同上。

    宋金凤,博士,副教授。主要研究方向:森林土壤学与土壤生态学。Email:songnefu@126.com 地址:150040 黑龙江省哈尔滨市香坊区和兴路26号东北林业大学林学院。 责任作者: 崔晓阳,教授,博士生导师。主要研究方向:森林土壤学与土壤生态学。Email:c_xiaoyang@126.com 地址:同上。

Sustained release and the kinetics of phosphorus from dark brown forest soils by organic acids.

  • 摘要: 模拟东北林区主要森林凋落物淋洗液中草酸/草酸盐和柠檬酸/柠檬酸盐浓度范围,配制0.5和2.0 mmol/L等不同浓度草酸/草酸盐和柠檬酸/柠檬酸盐溶液,分别用上述溶液以不同的浸提时间和次数浸提处理A1层暗棕壤,探讨不同浸提时间和次数处理时有机酸的磷释放效果,并确定最佳浸提时间。研究旨在探明草酸和柠檬酸对暗棕壤磷的持续活化效应,明确有机酸对暗棕壤磷素的活化程度和动力学特征。结果表明,用草酸/草酸盐和柠檬酸/柠檬酸盐浸提A1层暗棕壤时,随浸提时间延长磷释放量先增后减,有最佳浸提时间,大多数处理为12 h。从磷累积释放量上看,在1~72 h内,上述浸提剂对A1层暗棕壤的磷释放动力学能很好地用对数方程进行拟合。用草酸/草酸盐和柠檬酸/柠檬酸盐溶液连续10次和18次浸提A1层暗棕壤,第2次浸提的释磷量均大于第1次浸提,第3次后大体随浸提次数增加而下降,直到第10次或第18次时,较高浓度处理仍有一定的磷释放,特别是柠檬酸/柠檬酸盐处理;这说明,有机酸对暗棕壤中磷的释放具有累加效应。多次连续浸提时,随浸提次数增加,土壤磷的累积释放量增大,且草酸/草酸盐和柠檬酸/柠檬酸盐对A1层暗棕壤的磷累积释放量与浸提次数间都能很好地用对数方程进行拟合。

     

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出版历程
  • 收稿日期:  2014-02-27
  • 刊出日期:  2015-10-31

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