1936 年 10 巻 1 号 p. 53-62
To a highly acidic Soil^<(1)> with very low exchangeable lime content added CaCO_3 in ascending rates of amount and planted paddy rice. From the results of experiments the author could confirm that the paddy rice grows quite normally on the highly acidic Soil with very low exchangeable lime content, and also grows fairly good on the Soil which has good supply of lime and reacts basic. Namely, the range of reaction which adapt for the normal growth of paddy rice is very wide. (1) This Journal ; Vol. 9. No. 4. (1935)