@article{oai:u-ryukyu.repo.nii.ac.jp:02006885, author = {池原, 真一 and Ikehara, Shin-ichi}, 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 = {The structure of Agricultural Technology in Low Productivity Area. The factors affecting low productivity in N sugar cane production region, Ueno-son, Miyako lslands can be condensed as follows: 1. Soil condition is, in general, poor with shallow land; and, in addition, a practice of self-sufficing manure is low. 2.The improvement and rationalization of cultivating technology have been insuffucient. 3.Damages from natural calamity, especially by typhoon and drought are great., 紀要論文}, pages = {205--223}, title = {低位生産地の鹿業技術構造}, year = {1961} }