The effect of adding P and Cd respectively or together on N mineralization in cultivated red soils derived from different parents（quater-nary red soil,weathering product of granite,weathering product of limestone,weathering product of slate）,in Hunan,was studied based on indoor incubation with P concentrations of 0,0.1,0.3,0.5 g/kg and with Cd concentrations of 0,0.5,1.0 mg/kg.Results showed that the average accumulation of N mineralized in quaternary red soil increased first and then decreased with the addition of P,and the maximum N mineral...
