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土中石灰质(CaCO_3)含量的测定,采用一般试验室通常所用的气量法,即把由碳酸盐中所发生的CO_2,收集于有刻度的玻璃管中,量其体积而换算成CaCO_3含量(注1)。测定方法虽然简单,但如果考虑气压和气温的影响而进行计算,就繁难费时,且易出错。同时,随着大跃进形势的要求,此项测定的工作量也大大增加。因而简化其计算手续,提高工作效率就显得更为重耍。本文介绍一种简化计算的工具——土中石灰质含量特种计算尺的制尺原理:制尺方法和使用。
Soil calcareous content (CaCO_3) determination, commonly used in the laboratory gas volume method commonly used, that is produced by carbonate CO_2, collected in a graduated glass tube, the amount of its volume and converted into CaCO_3 content ( Note 1). Although the measurement method is simple, calculations taking into account the effects of air pressure and air temperature are troublesome and error-prone. At the same time, with the requirements of the Great Leap Forward situation, the workload of this measure has also increased greatly. Therefore, it is more important to simplify the calculation procedures and improve work efficiency. This article presents a simplified calculation of tools - soil calcareous special rule of the foot rule: the method and use of foot.