With the development of new fertilizers and agricultural tools, along with the improvement of rice varieties through selective breeding, agricultural production increased remarkably as a result of various circumstances, such as the spread of double-cropping in Kinai and Sanyo regions.
肥料や農具などの改善や米の品種改良の進展などを背景として、畿内や山陽などで二毛作が拡がるなど、農業生産が著しく向上していった。