抄録
Japan's food self-sufficiency ratio has been declining since the 1960s, and the major causes of this decline were increase in agricultural production costs, changes in food consumption pattern, progress in agricultural import liberalization, and decline in prices of imported agricultural products due to the appreciation of the Japanese yen. For attaining Japan's food security it will be effective to hold appropriate level of food stocks, and diversify import sources of agricultural products as well as making long-term import contract of agricultural products. In order to attain the supply of necessary minimum amount of food it is desirable to prepare a plan to transform and expand agricultural production as soon as food crises occur.
