水稲の葉片分析による肥料条件と栄養状態の関係に就て

抄録

1. The nutritional status of rice plants grown in plots of pot culture with different levels of fertilizing was studied by means of leaf analysis. 2. Cell sap concentration of the leaf blade indicated generally the nutritional status of the plant, but not precisely. 3. There was found distinct correlatron between the N, P, or K content in the leeaf blade and the feetilizer treatment, that is, the leaf of the plant in the no N plot was low in N percentage, and especially, that in the no P, of no K plot, the relation was remarkable from the early stage of growth. 4. The results of leaf analysis agreed well with the normality of plant ripening whieh varied with fertilizer treatment. 5. The writers believe that leaf analysis is useful for diagnosing nutrient status of rice plants.