He proposed to introduce Kueiden (lands directly managed by the government to secure revenues) in 823 when he was in the post of Dazai no daini, and incorporated Tane Province into Osumi Province in the following year 824.
-大宰大弐として赴任中の弘仁14年（823年）に公営田の導入を建議、翌天長元年（824年）に多褹国を大隅国に編入した。