About HAMA TAKEHIDE
About 京大 大学院農学研究科
About NAKAMURA KIMIHITO
About 京大 大学院農学研究科
About KANEKI RYOICHI
About 滋賀県大 環境科学
About KAWASHIMA SHIGETO
About 京大 大学院農学研究科
About irrigation
About paddy field
About environmental conservation
About water purification
About Nitrogen
About phosphorus
About material balance
About survey on actual situation
About reuse of water
About recycling irrigation
About improving water quality
About 排出負荷
About Agricultural engineering
About Water pollution in general
About 循環灌漑
About 地区
About 水田
About 窒素
About リン
About 収支