汉唐粮食亩产反映的度量衡问题

汉代、唐代乃至以后的宋元明清各代，亩产均记为当时的一石，这是个有趣的现象。粮食亩产量、度量衡制、亩制在不断变化，这就要求三者的变化要一定的规范，在变化中是相互关照的。“石”本为重量单位，但在亩产量上也为容量单位，度量衡在设定时就已照顾到三者之间的对应关系。历代存在着以黍粒检校度量衡的制度，这种制度又必然与黍粒的变化存在着一定的联系。

On Weights and Measures Reflected from the Grain Yield per Mu in Han and Tang Dynasties

The grain yield per Mu of Han and Tang Dynasties as well as the followed Song,Yuan,Ming and Qing Dynasties was one Dan,which is very interesting.The grain yield per Mu,weights and measures and Mu system changed with time,which required the three factors must obey some certain norms and take care of each other."Dan" was once used as a unit of weight,but it also could be a unit of capacity to the grain yield.At the time of the creation of weights and measures system,it had considered the relation among them.T...