About TSUNEDA DAISUKE
About 北海道農業開発公社
About KITAGAWA IWAO
About 農業・食品産業技術総合研究機構 農村工研
About 特産種苗
About Beta vulgaris var.rapa
About sugar plant
About simplification
About cost reduction
About price
About improvement
About irrigation engineering and rural planning
About land improvement
About water conveyance
About cultivation
About waste
About plant residue
About agricultural waste
About groove
About compost
About soil
About underdrain
About drainage(water)
About production capacity
About Beta vulgaris
About カッティングソイラ工法
About カッティングドレーン工法
About cost reduction
About low price
About 換金作物
About 甘味資源作物
About simplification
About ditch
About crop cultivation
About 作物生育
About plant residue
About production capacity
About water conduction
About 通水空洞
About sugar beet
About 土壌排水
About drainage improvement
About 畑作物
About 補助暗渠
About Agricultural engineering
About Sugar crops
About 甘味
About 資源作物
About 生産動向
About てん菜
About 排水改良
About 工法
About カッティング
About ドレーン工法