A soil column experiment was conducted to investigate leaching regimes of nitrogen (N) and phos- phorus (P) from four fertilizers

i.e.

organic compound fertilizer

inorganic compound fertilizer

pig ma- nure compost and peanut cake applied individually and in combination in latosolic red soils of South China. Results showed that leaching loss rates of fertilizer N ranged from 43.2% to 74.8% and those of fertilizer P ranged from 0.01% to 0.08%

exhibiting severe leaching loss of N and marginal leaching loss of P in latosol- ic red soils in South China.Leaching loss amounts of inorganic N were similar to those of organic N in the treatments where fertilizer was individually applied

but higher than those of organic N in the treatments where fertilizers were applied in couple.Particulate P (PP) was the main form of phosphorus leaching loss in all the treatments.The combined application of two fertilizers increased leaching loss amounts of ammonium and inorganic N

but at the same time reduced organic and total N leaching loss amounts.When pig manure compost was applied together with compound fertilizer

PP and total P (TP) leaching losses were reduced

but when peanut cake was applied with compound fertilizer

the leaching losses of PP and TP were elevated. Dissolved P (DP) leaching was reduced in all the combined fertilization treatments.Significant interaction effects of combined fertilization were found on leaching losses of N and P in latosolic red soils.