Kanden had two systems: a direct administration system that contracted farm work out to 正長 and gave eiryo to collect a certain amount of crop, and the system of jishi or chinso (land taxes under Ritsuryo system).
この官田は正長に請け負わせ、営料を与えて所定の穫稲を収取する直営的経営の方式と、地子制または賃租制による方式とがある。