@article{oai:obihiro.repo.nii.ac.jp:00004667,
 author = {Tani, Masayuki and 谷, 昌幸},
 issue = {6},
 journal = {ニューカントリー},
 month = {Jun},
 note = {application/pdf, 土の「基本」に立ち返る No. 27},
 pages = {56--57},
 title = {可給態窒素：作物に供給され得る窒素量を評価し施肥量を増減},
 volume = {67},
 year = {2020}
}