About TAKEDA YOSHIKAZU
About 宮城県農セ
About CHUBACHI TOMIO
About 宮城県農セ
About YAMBE IZUMI
About 宮城県農セ
About 東北農業研究
About paddy rice
About Soil fertility
About Rice cropping
About 水稲
About 地力
About 栽培技術
About 緑肥
About 鋤込み
About 生育
About 養分吸収