1. Fujiwara, A. and Ohira, K., Studies on the nitrogen nutritions of crops. I. Relation between nitrogen dressing and growth, yield of rice plant. J. Sci. Soil and Manure, Japan22, 91–96 (1951) (In Japanese).
2. Ishizuka, Y. and Tanaka, A., Biochemical studies on the life history of rice plant. II. Synthesis and translocation of organic constituents. J. Sci. Soil and Manure, Japan23, 113–116 (1953) (In Japanese).
3. Kasai, Z. and Asada, K., Translocation of mineral nutrients and other substances within the rice plant.In: The Mineral Nutrition of the Rice Plant, p. 75. Johns Hopkins Press (1965).
4. Murata, Y., On the influence of solar radiation and air temperature upon the local differences in the productivity of paddy rice in Japan. Proc. Crop Sci. Soc. Japan.33, 59–63 (1964) (In Japanese).
5. Murayama, N.et al., The process of carbohydrate accumulation association with growth of rice plants. Bull. Nat. Inst. Agr. Sci. Japan.B4, 123–166 (1955) (In Japanese).