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。
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.
出处
《西南农业大学学报（自然科学版）》
CSCD
1999年第2期174-179,共6页
Journal of Southwest Agricultural University
基金
重庆市中青年科技专家基金
关键词
紫色水稻土
硅酸盐
吸附
解吸附
释放动力学
硅肥
purple paddy soil
silicates
adsorption
desorption
release
kinetics eguations
