たばこ苗の栄養に関する研究(第2報) : たばこ苗の体構成に及ぼす培養液中の窒素, 燐濃度の影響について

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Tabacco seedlings were cultured by the method (cited in part 1), which applied nitrogen in four degrees (0,10,40,130,p.p.m.) and phosphorus in three degrees (0,10,20,p.p.m.). 1) Yield of the seedling was maximum at 40 p.p.m. of N and 10 p.p.m. of P in the solution. 2) N-content of the seedling increased with increasing concentration of N in the solution, and this tendency was same in the relation between P-content and concentration of P. 3) Absorption of N was different between two plots, 40 p.p.m. and 130 p.p.m. This difference was considered to be caused by the difference in applied concentration of P. N was of non-protein. 4) Applied with same cocentration of N, P was always absorbed more in the plot of 20 p.p.m. than that of 10 p.p.m. P was of non-protein. 5) Soluble carbohydrate decreased with increased N application. It was always more in the plot of 10 p.p.m. P than in that of 20 p.p.m. P, in the case of being applied with N in same concentration.
社団法人日本土壌肥料学会の論文
1953-09-01