About ABE SHIN
About アフリカ稲研究セ
About 日本土壌肥料学雑誌
About Africa
About paddy field
About cultivation
About burnt field
About tillage
About cropping system
About paddy rice
About development
About lowland
About field study
About Sub Sahara
About rice crop
About 焼畑移動耕作
About 水田開発
About 伝統農法
About 土壌肥料学
About 内陸小低地
About 非水田稲作
About Rice cropping
About Fertilizer application and efficiency
About Agricultural economy,agricultural management
About サブサハラ
About アフリカ
About 土壌
About 肥料
About 研究
About 水田
About 稲作