Decrease of the total cultivation area continued for a while even during the recovery period after the war as priority was given to the solution of food shortage, however, it increased after a few years and its area recovered to pre-war levels in 1952.
戦後の復興期もしばらくは食糧難の解消が最優先とされ栽培面積の減少が続いたが数年後には増加に転じ、1952年に戦前の水準まで回復した。