About CHOTANGUI Asafor Henry
About Nihon Univ., Kanagawa, JPN
About SUGAHARA Koji
About NARO Agricultural Res. Center, Ibaraki, JPN
About TORIGOE Yoichi
About Nihon Univ., Kanagawa, JPN
About Environmental Control in Biology
About cropping system
About lysimeter
About nitrate nitrogen
About Nitrogen
About soil component
About material balance
About fertilization (cultivation)
About estimator
About soil nitrogen
About nitrogen balance
About Andosol
About andosol
About Soil chemistry
About Fertilizer application and efficiency
About アンドソル
About 作付体系
About ライシメータ
About 実験
About 土壌窒素
About 平衡
About 推定システム
About 性能試験