@article{oai:repository.naro.go.jp:00001580,
 author = {金澤, 健二 and KANAZAWA, Kemji},
 journal = {中央農業総合研究センター研究報告, Bulletin of the National Agricultural Research Center},
 month = {Feb},
 note = {Databases of representative values of prefectural fertilizer recommendations and crop nutrient content values are constructed in order to establish fundamental data sets for the national scale trend analyses of nutrient demand for crop production and/or of the environmental influence by nutrient management in agricultural fields in Japan. National annual demand of nitrogen (N), phosphorus (as P_2O_5), and potash (as K_2O) were estimated at 465 kton, 468 kton, and 531 kton, respectively, using national average of representative values of prefectural fertilizer recommendations for 132 crops and their cultivated land area. These estimated values corresponded 99% for N, 101% for P_2O_5, and 148% for K_2O of annual nutrient consumption data based on chemical fertilizer statistics. Chemical fertilizer usage would decrease if such nutrient management becomes more popular that takes account of nutrient supply from manure.},
 pages = {27--50},
 title = {都道府県の施肥基準値及び堆肥の施用基準値のデータベース並びに作物の収穫物の養分含有率のデータベースとその利用法},
 volume = {12},
 year = {2009},
 yomi = {カナザワ, ケンジ}
}