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据近几十年来考古发掘材料证明,约在七、八千年以前,我国北方和南方一些地方已有粟、稻种植。经历漫长的不定期撂荒、定期撂荒阶段,直到约公元前三世纪成书的《周礼》中,土地连种才见于记载。随着人口的繁衍,经济的发展,技术的提高,人们对土地的利用也益发重视。公元前四世纪魏国李悝曾倡导“尽地力之教”。新兴的封建王国,竞相发展实力,壮大自己的财富,纷纷筑城设防,带来城市手工业的较快发展和人口相对集中,
Archaeological excavations in recent decades have proved that about 7000-8000 years ago millet and rice were planted in some places in the north and south of our country. Experienced a long period of indefinite shortage, a period of permanent shortage of land, until about the third century BC book Zhou Li, the land is even recorded in records. With the multiplication of population, economic development and improvement of technology, people pay more attention to the utilization of land. Wei Li, a fourth-century BC teacher, once advocated “teaching”. Emerging feudal kingdom, competing to develop their strength and expand their wealth, fortification fortifications, bringing the rapid development of urban handicrafts and population are relatively concentrated,