However, the research after the 1990's has gradually strengthened another theory that konden was in line with the policy of expanding agricultural land, a policy which was undertaken by the Ritsuryo Government (an ancient Japanese government of centralized governance).
しかし、1990年代以降の研究では、墾田は律令政府が企図していた農地拡大政策に沿ったものとする評価が次第に有力となっている。