| 苹果酸对温室土壤磷释放与吸附的影响 |
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| 引用本文： | 段立珍,汪建飞,赵建荣,王力.苹果酸对温室土壤磷释放与吸附的影响[J].土壤通报,2007,38(1):81-84. |
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| 作者姓名： | 段立珍 汪建飞 赵建荣 王力 |
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| 作者单位： | 安徽科技学院,资源环境系,安徽,凤阳,233100 |
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| 基金项目： | 安徽省自然科学基金;安徽省高校科研项目 |
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| 摘 要： | 试验研究了不同浓度苹果酸处理对温室土壤磷吸附和释放的影响,并运用DPS数据分析系统建立了土壤磷释放和吸附与苹果酸浓度之间相关的数学模型。结果表明:(1)随着苹果酸用量增加,土壤释放磷量也逐渐增加。二者之间的关系可以用Peal-Reed等7种不同类型的数学模型拟合;(2)供试土壤对磷的吸附较好地符合Langmu ir方程式;苹果酸显著降低了土壤对磷的吸附,随着苹果酸浓度的增加,土壤对磷的最大吸附量和最大缓冲容量都呈现下降趋势。
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| 关 键 词： | 温室土壤 苹果酸 磷的释放与吸附 数学模型 |
| 文章编号： | 0564-3945(2007)01-0081-04 |
| 修稿时间： | 2006年2月1日 |
Effects of Malic Acid on the Release and Absorption of Phosphorus in Greenhouse Soil |
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| DUAN Li-zhen,WANG Jian-fei,ZHAO Jian-rong,WANG Li.Effects of Malic Acid on the Release and Absorption of Phosphorus in Greenhouse Soil[J].Chinese Journal of Soil Science,2007,38(1):81-84. |
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| Authors: | DUAN Li-zhen WANG Jian-fei ZHAO Jian-rong WANG Li |
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| Abstract: | The effects of malic acid on the release and absorption of phosphorus in greenhouse soil were studied by isothermal adsorption and then mathematical formulae were developed with the DPS data analysis system.The results showed that:(1)Malic acid promoted the release of soil phosphorus,and the relationship between malic acid and P could be expressed by seven kinds of mathematical formulae.(2) The phosphate adsorption curves of the tested greenhouse soil could be described by Langmuir equations.With increasing malic acid supply,the maximum phosphate adsorption and maximum buffer capacity of the tested soil were decreased. |
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| Keywords: | Greenhouse soil Malic acid Release and absorption of phosphorus Mathematical formula |
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