在土壤学研究中,分析资料占有重要的地位.而资料的精度和正确性,不仅受到分析方法的支配,也将受到土样取样方法的影响.关于分析方法,历来受到人们较多的注意,其中不少已拟定了统一的分析规程;而对于取样方法,则研究较少.有些学者虽然已注意到某些元素在土壤中分布的不均匀性,也相应提出了一些在减少这种不均匀性所造成的误差的取样方法,但由于对这种不均匀性的程度和来源研究不够, In soil science research, analysis of data occupies an important position.While the accuracy and correctness of the data, not only by the analytical methods, but also by the soil sampling methods.As for the analysis methods, has always been more attention, Many of them have drawn up a unified analytical procedure, while less research has been done on sampling methods, and although some scholars have noticed some non-uniform distribution of some elements in soils, some corresponding suggestions have been made to reduce such non-uniformities However, due to the lack of research on the extent and source of such inhomogeneities,