研究简报
梁成华,陈新之,李焕珍,李纪柏,杨伟奇.施用磷石膏对碱化土壤氟含量及其吸附特性的影响[J].环境科学学报,1999,19(1):109-112
施用磷石膏对碱化土壤氟含量及其吸附特性的影响
- Effect of application phosphogysum on contents and adsorption characteristic of fluorine in alkline soils
- 基金项目：
- 作者
- 单位
- 梁成华
- 沈阳农业大学土地与环境学院,沈阳 110161
- 陈新之
- 沈阳农业大学土地与环境学院,沈阳 110161
- 李焕珍
- 沈阳市土肥站
- 李纪柏
- 沈阳市土肥站
- 杨伟奇
- 沈阳市土肥站
- 摘要：通过室内培养试验和田间试验就施用磷石膏对土壤氟含量和土壤对氟吸附特性的影响进行了研究。结果表明,经连续4年施用磷石膏改良土壤后,0-20cm土层全氟积累现象明显。但是,土壤水溶性氟含量却随磷石膏施用量增加而降低。土壤对氟的吸附数据均能与Langmuir,Freundilich和Temkin方程很好地拟合,施用磷石膏处理土壤对氟的最大吸附量高于没有施用磷石膏处理的。影响土壤水溶性氟含量和吸附特性的主要因素可能是土壤钙含量的增加和pH值的降低。
- Abstract：The changes of contents and adsorption characteristics of fluorine in a alkaline soils improved by applying phosphogpsum for 4 years successively were studied.The results indicated that the total fluorine accumulated evidence was obviously among the soils (0-20cm) applied phosphogpsum. But, There was a tendency that the contents of water soluble F-dropped with the increase amount of phosphogpsum added. The trial data of F-adsorption in examined soils were significantly conform to Langmuir,Freundlich,Temkin equations The maximum amounts of F-adsorbed were increased in the improved soils compared with the soil (CK). The main factors controlling the contents of water soluble F-and F-adsorption behavior might be the amount of Ca2+ and pH values in the soils.
- Key words：alkaline soil phosphogypsum water soluble F- pH
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