Abstract
The facts findings in this paper are summarized as follows 1) There are 3 type-agricultural-techniques in this period, the first is a normal technique which follows the evolution in the preceding periods. The second is the technique specific to this period which was needed to meet the requirement of food self sufficiency and the third is a special one to substitute the banned imported industrial materials with new materials from agricultural products. 2) Many people think the cause of the food crisis at the last stage of the World-WarII was the cut in production. But it's not correct. The food Crisis in the World-Warll period was mainly caused by military control which reoriented almost all of agricultural products into the substitutive munitions, because all industrial materials couldn't be imported. 3) The farm household-economy became much better than the Pre-War Period, supported by the inflation and the underground economies. Maybe it was the first experience for modern Japanese peasants to have realized their own power to produce foods, which is the most essential method for human beings to live.
