一 引言我国自古重农。为了增加产量,提高劳动生产率,自远古直到晚明,对于从事农业生产各方面所使用的工具,均继续有所发明和发展。而且同样的一种工具,按创始的年代说,往往早于其他国家几百年,甚至一两千年。 An introduction to our country since ancient heavy farming. In order to increase output and increase labor productivity, the tools used in all aspects of agricultural production have continued to be invented and developed from ancient times until late Ming. And the same kind of tool, according to the founding age, is often hundreds of years earlier than other countries, or even a thousand or two thousand years.