当前位置: 首页 > 文章 > 低分子量有机酸作用下棕壤、褐土钾的释放动力学研究 辽宁农业职业技术学院学报 2005,7 (1) 1-3
Position: Home > Articles > The Dynamics Research on the Cinnamon Releasing of Brown Soil Extracted by Low-Molecular-Weight Organic Acid Journal of Liaoning Agricultural Technical College 2005,7 (1) 1-3

低分子量有机酸作用下棕壤、褐土钾的释放动力学研究

作  者:
王东升;梁成华;王文华
单  位:
沈阳农业大学土地与环境学院;辽宁农业职业技术学院
关键词:
钾;低分子量有机酸;连续浸提;动力学;释放
摘  要:
6种有机酸、2种无机酸溶液连续浸提棕壤、褐土, 研究土壤钾的释放。有机酸作用下土壤钾的释放是酸性水解和络合溶解双重作用的结果。草酸活化钾能力最强, 苹果酸、柠檬酸、酒石酸等活化钾的能力小于草酸, 比乙酸和乳酸大。用不同数学模型模拟有机酸浸提土壤钾释放动态过程, Elovich 方程判定系数R2 为0 865~0 999, 双常数方程的判定系数R2 为0 882~0 996, 达到极显著水平, 拟合效果很好; 抛物线扩散方程判定系数R2 为0 556~0 879, 拟合效果较差。
译  名:
The Dynamics Research on the Cinnamon Releasing of Brown Soil Extracted by Low-Molecular-Weight Organic Acid
作  者:
WANG Dong-sheng 1,LIANG Cheng-hua 2,WANG Wei-hua 1(Liaoning Agricultural College,Yingkou 115214,China;)
关键词:
low-molecular-weight organic acid;mineral potassium;batch equilibrium;release;kinetics
摘  要:
Six kind of organic acids and two kind of inorganic acids have been used to study the kinetics of potassium release from two type of soils sampled from Liaoning.Oxalic extracted more potassium than the other organic acids and inorganic acids solution.The mechanism of potassium release extracted by low\|molecular\|weigh organic acid was the result of acidic hydrolysis and complexation reaction.Elovich equation(R\+2 0 865~0 999)and Power function equation(R\+2 0 882~0 996)are fit for the description of soil potassium release.

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