【摘要】 应用同位素（３２Ｐ）示踪法研究了陕西省４种土壤（黄绵土、黑垆土、土娄土和黄褐土）的３种处理状态（风干、去ＣａＣＯ３风干和原状）磷素运移特征。结果表明，平衡方法和ＣＸＴＦＩＴ程序拟合法求出的土壤磷素运移参数，都可以较好地描述磷素运移过程的特征；由于ＣＸＴＦＩＴ程序拟合法直接应用穿透曲线拟合，还可应用于原状土壤中磷运移参数的推求，所以，与平衡法相比ＣＸＴＦＩＴ程序拟合法更优。更多还原

【Abstract】 The phosphorus transport character in 3 states (wind dry soil,wind dry soil after CaCO3 elimination and natural soil) of 4 kinds of soils (loessial soil,black Lu soil,Lou soil and yellow cinnamon soil) in Shaanxi Province was studied by using isotopic tracer (32P).The results showed that the phosphorus transport parametres calculated by two kinds of method equibrium and CXTFIT program methods were able to describe the process of phosphorus transport.The CXTFIT program method was superior to the equibrium method because the former could be directly applied to breakthrough curve and to determining the phosphorus transport parametres.更多还原