水稲に対する石灰施用効果の再検討 (第3報) : 稲の生育及び養分吸収に及ぼす Ca イオンの影響

概要

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With object of studying the influence of Ca ion on the growth and metabolism of rice-plant, Ca ion was applied at various concentration to the nutrient solution in which rice-plant was growing, and results obtained were as follows. (1) By increasing concentration of Ca ion in the nutrient solution in the order of 4,8,44 and 84 p.p.m., growth of plant was remarkably encouraged. Especially the roots were more affected than tops by high Ca ion concentration both in length and dry weight. (2) The rice-plant cultured in high Ca ion concentration solution had very high CaO content, and as far as pH of nutrient solution was concerned, that cultured in high pH solution had also higher content than that in low pH solution, (3) K_2O content of rice-plant was apprarently decreased by high Ca ion concentration of culture solution, although other workers had elucidated this relationship in several other plants. (4) P_2O_5 content of rice-plant increased slightly in accordance with increase of CaO content. (5) As to nitrogen, its content decreased slightly, while its total amount accumulated in plant considerably increased in accordance with increase of CaO content.
社団法人日本土壌肥料学会の論文
1955-06-05