About OYA MASAYA
About 岡農総セ 農研
About YAMAMOTO SHOGO
About 岡農総セ 農研
About 日本土壌肥料学会講演要旨集(Web)
About cultivation by direct seeding
About forage rice
About crop yield
About covering
About iron powder
About basal fertilization
About fertilization(cultivation)
About paddy field
About nitrogen fertilizer
About brown rice
About plant growth
About straw
About spike
About lodging
About income
About cultivation
About urea fertilizer
About transplanting cultivation
About iron coating
About coated urea
About Fertilizer application and efficiency
About Forage crops,pasture
About 鉄コーティング
About 湛水直播栽培
About 全量
About 基肥
About 施肥
About 飼料用米
About 収量
About 所得