高水平上的分析偏倚,是地球化学制图中遇到过的严重问题。以往认为这种偏倚的校准是非常困难的。在实践基础上,本文提出应用“克立格法”——“地质统计学”的原理,可以有效的校准这种偏倚。本方法实施的要点是模拟实验半变异函数模型,建立克立格方程组求解权系数,并利用斯米尔诺夫法求出校正系数,根据校正数据进行地球化学制图。 High levels of analytical bias are serious problems encountered in geochemical mapping. In the past that the calibration of this bias is very difficult. On the basis of practice, this paper proposes that the principle of “kriging” - “geostatistics” can be used to calibrate this bias effectively. The key point of this method is to simulate the experimental semivariogram model, to establish Kriging equations to solve the weight coefficient, to find the correction coefficient by Smirnov method, and to carry out the geochemical mapping according to the calibration data.