| 紫色水稻土对硅酸盐的吸附解吸与释放动力学研究 |
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| 引用本文： | 高明 魏朝富 等. 紫色水稻土对硅酸盐的吸附解吸与释放动力学研究[J]. 西南大学学报(自然科学版), 1999, 21(2): 174-179 |
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| 作者姓名： | 高明 魏朝富 等 |
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| 作者单位： | 西南农业大学资源环境学院 |
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| 基金项目： | 重庆市中青年科技专家基金 |
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| 摘 要： | 对四川几种主要紫色水稻土的硅酸盐吸附、解吸与释放动力学研究表明，紫色水稻土吸硅能力较强，吸附，解吸分快反应和慢反应两步进行，24h内的吸附、解吸量占吸附、解吸总量的50%以上。有机酸比水显著地促进土壤硅的释放，增加土壤有效硅的含量，吸附、解吸动力学过程能很好地拟合Langmuir型方程。
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| 关 键 词： | 紫色水稻土 硅酸盐 吸附 解吸附 释放动力学 硅肥 |
KINETICS OF SILICATE ADSORPTION DESORPTION AND RELEASE IN PURPLE PADDY SOILS |
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| Gao Ming, Wei Chaofu, Xie Detie, Chen Shizheng. KINETICS OF SILICATE ADSORPTION DESORPTION AND RELEASE IN PURPLE PADDY SOILS[J]. Journal of southwest university (Natural science edition), 1999, 21(2): 174-179 |
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| Authors: | Gao Ming Wei Chaofu Xie Detie Chen Shizheng |
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| Abstract: | A preliminary study was carried out of the kinetics of silicate adsorption-desorption and release in three major purple paddy soils collected from Sichuan province. All the soils showed a strong ability to adsorb silicon. The whole process of adsorption-desorption was divided into two stages: a fast reaction followed by a slow reaction. The adsorbing-desorbing capacity in the first 24 hours accounted for more than 50% of the entire process of adsorption-desorption. Compared with water, organic acids significantly promoted the release of silicon in the soil. The kinetics of silicate adsorption and desorption in the soils could well be described with a longmuir-type equation. |
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| Keywords: | purple paddy soil silicates adsorption desorption release kinetics eguations |
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