摘要
以土柱实验为基础 ,结合磷在土壤中的化学转化机理 ,将磷在土壤中的形态分为可溶态磷、吸附态磷和沉淀态磷 .根据磷在土壤中的迁移转化模拟实验 ,分析了这 3种形态的磷在土壤中迁移转化的规律 :可溶态磷进入土壤后 ,主要随水分作溶质迁移 ,在迁移的同时 ,不断转化为吸附态磷和各种沉淀态磷 ;吸附态磷由可溶态磷生成 ,并与可溶态磷一起发生沉淀反应生成沉淀态磷 ,但固着于土壤颗粒上 ,不发生迁移 ;沉淀态磷由可溶态磷和吸附态磷生成 ,在土壤中主要参与化学转化 ;
An experiment, was performed to simulate phosphorus transferring and transforming in the soil. The results showed that, phosphorus in the soil can be water P, adsorption P or deposition P,and each follows its own transfer and transforom law. The water P transfers with water firstly, at the same time it transforms to adsorption P and deposition P successively: The adsorption P can not be transferred but is adsorbed by the particle in the soil, and turned into deposition P as time goes on. The deposition P in transformed from water P and adsorption P. It is specially important that deposition P was found transfers with water in the soil during the experiment.
出处
《环境科学学报》
CAS
CSCD
北大核心
2001年第6期737-741,共5页
Acta Scientiae Circumstantiae
基金
国家自然科学基金资助项目 (2 97770 0 1)
