水溶性有机高分子对红壤磷吸附特征的影响  

Effects of Water-dissolved Organic Polymeric Compounds Application on P Adsorption in Red Soils

作　　者：化全县[1] 周健民[1] 王火焰[1] 杜昌文[1] 

机构地区：[1]土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所

出　　处：《水土保持学报》2005年第3期5-8,共4页Journal of Soil and Water Conservation

基　　金：国家自然科学基金(30400273);加拿大钾磷研究所(PPI/PPIC)资助项目

摘　　要：本试验采用连续振荡法,初步研究了水溶性有机高分子材料聚乙烯醇、聚丙烯酰胺和聚乙二醇对磷在红壤中吸附过程的影响,并对该过程拟合出方程。结果表明:在聚乙烯醇、聚丙烯酰胺和聚乙二醇作用下土壤磷吸附动力学以幂函数方程为最优方程,且方程参数与单施磷酸二氢钙的处理方程参数有显著差异性。有机高分子能显著提高磷在红壤中的吸附和土壤pH,但材料之间的土壤吸附量无差异显著性,需进一步研究。The continuous shaking trials were conducted to preliminarily study the effect of the different water-dissolved organic polymeric compounds-polyvinylalcohol (PVA), polyacrylamide (PAM) and polyethyleneglycol (PEG), on the kinetics of P adsorption in red soils. The results indicated that power-function model had been interpreted as an optimum indication of P adsorbed process in virtue of the compounds application, and the parameters in model of the compounds treatments were significantly different from that of the treatment alone applied monocalcium phosphate (MCP). The P adsorption and pH in soil were increased by the application of PVA, PAM or PEG, but the quantities of adsorption among the treatments applied them were not remarkably different.

关 键 词：聚乙烯醇 聚丙烯酰胺 聚乙二醇 幂函数方程 磷吸附 

分 类 号：S153.5[农业科学—土壤学] S155.25[农业科学—农业基础科学]