A two-year lysimeter experiment was carried out using simulated soil profiles of three major types of Anthrosols (Paddy soil) in the Dongting Lake area on effect of conventional chemical fertilizer (CF),controlled release nitrogen fertilizer (CRNF),and addition of pig manure (OM) on N,P and K leaching loss,to explore status quo and laws of nutrient leaching loss from paddy fields under the double rice cropping system in Dongtinghu Lake area.Results show total nitrogen (TN) leaching loss accounted for 2.28%,0.66% and 1.50%,respectively,of the fertilizer-N app lied in paddy field of Typic Hapli-Stagnic Anthrosols (THS),Endogleyic Hapli-Stagnic Anthrosols (EHS) and Typic Fe-accumuli-Stagnic Anthrosols (TFS) in Treatment CF.The significantly higher amount of leachate led to distinctly greater TN loss in THS than in TFS,even though TN concentration in the leachate from THS was close to that in TFS; both the amount of leachate and the TN concentration therein from EHS were significantly lower than that from the other two soils.Among the N lost through leaching,ammonium N (NH₄⁺-N),organic nitrogen and nitrate N (NO₃^--N) accounted for 39.7%,56.8% and 3.5%,respectively.Total potassium (TK) leaching loss from THS,EHS and TFS accounted for 14.0%,4.68% and 11.5% of the fertilizer-K applied,showing a decreasing order TFS > THS > ETS.The total phosphorus (TP) leaching losses from these soils were very limited,and not much different between treatments.Among all the treatments,TN concentrations in leachate in Treatment CRNF were the highest and significantly higher than that in CK in all the soils,and those in Treatments CF and OM were relatively lower than in Treatment CRNF,but significantly higher than that in CK only in THS and TFS.TK concentrations in leachate from Treatments OM and Treatment K (potassium chloride) were distinctly higher than that in CK in all the soils.Because nutrient leaching loss is a longterm and p rogressive process,this study has been conducted continuously for only 2 years,so the difference in N and K leaching losses between N and K fertilization treatments was not significant.