とう精試験成績よりみた米穀の品質区分 〔第2報〕

抄録

1. In order to ascertain the correlation, which has been believed to be high, milling test was carried out with low land non-glutinous rice, produced in appointed 6 prefectures and came within the requirement of 2nd, 3rd and 4th grade of Japanese inspection standard. 2. As to milling rate, highly significant difference between grades was recognized, and this significant difference was still unchanged after adjustment of regression. 3. Between block (prefecture), significant differences of milling fate are recognizable to some degree. 4. The reason why the correlation coefficient is very small in this case, was discussed.