About AKAI NAOHIKO
About 岡山県農林水産総合セ 農研
About WASHIO TATSUKI
About 岡山県農林水産総合セ 農研
About TABUCHI MEGUMI
About 岡山県農林水産総合セ 農研
About ISHIBASHI EIJI
About 岡山県農林水産総合セ 農研
About 日本土壌肥料学雑誌
About paddy field
About soil acidity
About Potassium
About Sodium
About Okayama prefecture
About paddy soil
About chemical property
About paddy rice
About stem (plant)
About leaf
About ratio
About fertilization (cultivation)
About guiding principle
About content (quantity)
About reduction of fertilizer application
About content rate
About 減肥指針
About Soil chemistry
About Rice cropping
About Fertilizer application and efficiency
About 岡山
About 水田土壌
About 化学
About 調査
About 水稲
About 茎葉
About ナトリウム
About 含有率
About カリウム減肥
About 指針