利用比重计法测定土壤颗粒组成,手续比较简单,但结果计算却比较繁琐,相对地需用较多的时间。为了探索简单的计算方法,各有关单位都作了不少工作,例如:查土粒直径利用司笃克列线图,简化列线图,粒径计算尺及计算表等。鉴于目前运用计算器比较普遍,笔者提出用查表取常数,在计算器上作常数运算的方法来简化计算手续。 The determination of soil particle composition using the hydrometer method, the procedure is relatively simple, but the results are more complicated calculations, the relative need to spend more time. In order to explore a simple calculation method, all the relevant units have done a lot of work, for example, checking the diameter of sediment by using the catechu line chart, simplifying the alignment chart, the particle size calculation rule and the calculation table, and the like. In view of the more common use of calculators, I propose to check the table to take a constant, the calculator for constant computing methods to simplify the calculation procedures.