This study was conducted to investigate the effects of different fertilizers on nitrogen,phosphorus and potassium absorption and distribution by celery and the changes of soil nutrients in the 0-40 cm soil layer under drip irrigation,so as to provide a theoretical basis for nutrient management of greenhouse celery cultivation and special fertilizer development.With celery as an experiment material and the ratio of conventional fertilization as control treatment,the effects of different ratios of nitrogen,phosphorus and potassium on nutrient absorption by celery and changes of soil nutrients were investigated by plot experiment in greenhouse.The results showed that the contents and distribution proportions of N and P in leaf were higher than those in stem,while for K,the content and distribution proportion were higher in stem than in leaf.The absorption amount of K was the highest in celery,followed by N,and the absorption amount of P element was the least.The mean ratio of N,P and K in celery was 1∶0.556∶1.609.There were evident dynamic changes in contents of soil available nutrients in the 0-20 cm soil layer in various growth stages of celery under different drip irrigation fertilizers.The contents of soil available nutrients were higher on the28~(th),47~(th) and 83~(th) d after field planting,while those before field planting and after harvest were lower.So the amounts of soil available nutrients were closely related to the growth stage of celery.In the whole growth period of celery,the mean input amounts of N,P_2O_5 and K_2O were 805,1 049 and 916kg/hm~2,respectively,but the absorption amounts of nutrients by celery were far less than inputs,and the amounts of N,P_2O_5 and K_2O absorbed by celery were only 23%-26%,10%and 31%-35% of the application amounts,respectively.The apparent balance of N,P_2O_5 and K_2O were 613,943 and 609kg/hm2,respectively,indicating excess fertilization in this experiment.Under this experiment condition,T1(N∶P_2O_5∶K_2O=1∶0.63∶1.08)favored increase of celery yield and absorption of nitrogen,phosphorus and potassium by celery.The results will provide a scientific basis for study and utilization of special fertilizer for drip irrigation on celery. This study was conducted to investigate the effects of different fertilizers on nitrogen, phosphorus and potassium absorption and distribution by celery and the changes of soil nutrients in the 0-40 cm soil layer under drip irrigation, so as to provide a theoretical basis for nutrient management of greenhouse celery cultivation and special fertilizer development. Who celery as an experiment material and the ratio of conventional fertilization as control treatment, the effects of different ratios of nitrogen, phosphorus and potassium on nutrient absorption by celery and changes of soil nutrients were investigated by plot experiment in greenhouse. The results showed that the contents and distribution proportions of N and P in leaf were higher than those in stem, while for K, the content and distribution proportion were higher in stem than in leaf. The absorption amount of K was the highest in celery, followed by N, and the absorption amount of P element was the least. The mean ratio of N, P and K in celery was 1: 0.556: 1.609.There were evident dynamic changes in contents of soil available nutrients in the 0-20 cm soil layer in various growth stages of celery under different drip irrigation fertilizers.The contents of soil available nutrients were higher on the 28 ~ (th), 47 ~ (th) and 83 ~ (th) d after field planting, while those before field planting and after harvest were lower.So the amounts of soil available nutrients were closely related to the growth stage of celery.In the Whole growth period of celery, the mean input amounts of N, P_2O_5 and K_2O were 805,1 049 and 916 kg / hm ~ 2, respectively, but the absorption amounts of nutrients by celery were far less than inputs, and the amounts of N, P_2O_5 and K_2O were absorbed by celery were only 23% -26%, 10% and 31% -35% of the application amounts, respectively.The apparent balance of N, P_2O_5 and K_2O were 613,943 and 609kg / hm 2, respectively, indicated excess fertilization in this experiment.Under this experiment condition, T1 (N: P_2O_5: K_2O = 1: 0.63 : 1.08) favored increase of celery yield and absorption of nitrogen, phosphorus and potassium by celery. The results will provide a scientific basis for study and utilization of special fertilizer for drip irrigation on celery.