中山間地域における稲・麦・大豆2年3作導入の経営評価

―主に「麦―大豆作」に注目して―

抄録

The purpose of this paper is to clarify the introduction effect and conditions of the 2 Year-3 crop rotation system (rice-barley-soybean) implemented by using a new seeding technology in mountainous areas. There are certain problems due to which agricultural operations cannot be finished on schedule in and around the rainy season in these areas. However, the new seeding machine system can help reduce the time period of some operations. Therefore, it can help the management introduce the 2 Year-3 crop rotation system. The second problem is that certain conditions regarding the farmlands in mountainous areas can lead to barley and soybean crops being unprofitable. Therefore, this paper simulates the profit with regard to each farmland condition and crop after the introduction of the abovementioned crop rotation system in a state comprising damp soil to clarify the introduction effect and conditions of the same.