Influences of temperature and duration of incubation were investigated through laboratory incubation experiment on transformation of monocalcium phosphate monohydrate (MCP), monoammonium phosphate (MAP) and diammonium phosphate (DAP) in black soil. Results show that high temperature increased fixation of the selected fertilizers in black soil and favored formation of Al-P; an increase of temperature from 5°C to 25°C and 50 days of incubation resulted in reduction of We-P in Treatments MAP and MCP by 51% and 42%, respectively, and simultaneously in increase in Al-P by 110% and 45%, respectively; at the initial stage of the incubation, not much influence of temperature on formation of Ca₈-P and Fe-P was observed, but it was getting obvious with the incubation going on. At 25°C, the formations of Ca₂-P and Ca₈-P were not much affected by duration of the incubation; at the beginning of the incubation, Al-P was formed rapidly, but the formation rate declined with the incubation going on; the formation of Fe-P displayed a reverse trend; the formation of Al-P was in significant negative linear correlation with that of We-P. Compared with MAP and MCP, DAP was more suitable for application in black soil.