前清时期的中国虽然是世界上的有实力的大国之一,但是中国当时的粮食单产由于受到生产技术、经营方式等诸多因素的制约而增加缓慢,对中国经济的进一步发展产生了不利影响。 Although China in the pre-Qing period was one of the most powerful powers in the world, the current grain yield in China was slowed due to the constraints of many factors such as production technology and management mode, which adversely affected the further development of China’s economy.