In the latter half of the seventh century when the Ritsuryo system (a system of centralized government based upon the ritsuryo code) was established, farmland became integrated into the system of Handen Shuju ho (the law of periodic reallocations of farmland), such as kubunden (farmland given to each farmer in the Ritsuryo system).
7世紀後半に律令制が整備され、田地は口分田などの班田収授法の体系に組み込まれていった。