About HARA YOSHITAKA
About 農研機構 九州沖縄農業研究セ
About 土づくりとエコ農業
About paddy rice
About cultivation by direct seeding
About seed pretreatment
About molybdate
About paddy field
About seed
About plant growth
About oxygen deficiency
About germination
About iron sulfide
About concrete mixer
About seeder
About molybdenum trioxide
About direct sowing of rice on flooded paddy field
About establishment
About Rice cropping
About 種子被覆
About 水稲
About 湛水直播
About 苗立ち
About 安定化