On the Local Difference of Ecological Characters of Rice in Japan.

[摘要] The author previously made an investigation on the local characters of paddy rice using the results of variety-test conducted at each Prefectural Agr. Exp. Station all over Japan from 1931 to 1955, and here he will illustrate the local characters of the prefectural recomended varieties of all over Japan in 1955. The maximum, minimum and mean values of heading date and hervesting date of all prefectural recomended varieties of all over Japan from the North to the South are shown. And the local mean value of plant height, number of tillers and yield per "tan" of prefectural recomended varieties and then the variety test of all over Japan from the North to the South are shown. Lastly the local correlation coefficient among paddy characters was illustrated.

[学科分类] 农业科学（综合）