牧草サイレージ生産原価の圃場間格差と農地集積の経済性

―北海道草地型酪農地帯におけるTMRセンターを対象に―

抄録

This study aims to examine the differences among the silage production costs of grassland fields and the economy of farmland accumulation in TMR Centers. The main outcomes are as follows. First, the differences among the silage production costs of grassland fields are due to differences in yield. Second, the silage production cost in the grassland fields which was released by discontinuance of farming is higher than the price of silage sold to external parties. Third, farmland accumulation increases the silage production cost. Therefore, improving the yield and price is necessary to maintain the farmland.