About YOSHIKAWA MASAMI
About 京都府農業総合研
About MATSUMOTO SEIJI
About 京都府農業総合研
About 近畿中国四国農業研究
About paddy field
About eating quality
About Soil fertility
About Plant nutrition
About Rice cropping
About 有機物
About 長期
About 水田
About 玄米
About 窒素
About 含有率
About 稲
About ケイ酸
About 土壌
About 可給態ケイ酸