Phosphorus in calcareous soils. II.—Determination of the organic phosphorus content of calcareous soils and its relation to soil calcium carbonate content

摘要: The organic phosphorus content of 33 calcareous soils (0.1-52.4% CaCO3,) was determined by the ignition method and hydrogen peroxide oxidation. Mean values for expressed as a percentage total were 14.5% 15.6% two methods respectively, although few individual showed wide differences. Organic n significantly correlated with % CaCO3 in soils.