@article{oai:u-ryukyu.repo.nii.ac.jp:02006884,
 author = {比嘉, 信吉 and Higa, Shinkichi},
 issue = {8},
 journal = {琉球大学農家政工学部学術報告, The science bulletin of the Division of Agriculture, Home Economics & Engineering, University of the Ryukyus},
 month = {Jun},
 note = {1.An investigation was made on the fertilization practices for the crops mentioned below in the southern district of Okinawa. And the average amount of the three main nutrient elements applied to each crop were compared with the recommended amounts in the standard fertilization, of which index being designated as 100%.(Table) 2. As to the first crop of rice, N was 102%, P_20_5-83% and K_20-75%. 3. As to second crop of rice, N was 103%, P_20_ 5-85% and K_20-65%. 4. As to sugar cane planted in summer, N •was 100%, P_20_5-95% and K_20-79%. 5. As to sugar cane planted in spring, N was 97%, P _20_ 5-93% and K_20-95%. 6. As to sweet potato, N was 89%, P_ 20_5-41% and K_20-62%. 7. As to soy bean, N was 78%, P_20_5-61% and K_2O-79%. And it was found that 50% of the farmers investigated raised soy bean without fertilizing. 8. The above comparisions were made through studying the kinds of fertilizer used, the amount of each fertilizer applied, fertilizing methods, etc. in each administrative district (Son)., 紀要論文},
 pages = {194--204},
 title = {主要作物施肥慣行調査(沖縄島南部)},
 year = {1961}
}