著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) LI Yuanhua and BARKER Randoph,Increasing water productivity for paddy irrigation in China,Paddy and water environment : journal of the international society of paddy and water environment engineering,16112490,,2004-12-01,2,4,187-193,https://cir.nii.ac.jp/crid/1570291225073756288,