In order to determine if the drip nitrogen fertigation strategy is suitable for the growth of fluecured tobacco and reduce soil nitrogen loss,and provide theoretical guidance for the production of fluecured tobacco,10 different drip nitrogen fertigation treatments were designed using cultivar K326 in the pot culture,and the N accumulation,distribution and utilization of fluecured tobacco and soil mineral N content were studied.The results showed that:for the treatments of topdressing only once after 28 days of transplantation,N content,N accumulation amount and distribution ratio of leaves,apparent N utilization efficiency(ANUE)and soil mineral N content increased with the increase of rate of N topdressing,N accumulation amount and distribution ratio of roots and stems and apparent budget of soil mineral N content were decreased.For the treatments of 50% of the N fertilizer used as base fertilizer,ANUE of topdressing twice on 28 and 42 days after transplantation were higher than that of topdressing only once,while ANUE was opposite under the conditions of 70% and 90% N topdressing.Topdressing twice increased soil mineral N content in the vertical direction(5～20 cm)distance and horizontal direction(15～20 cm)from the infusion point,and decreased soil mineral N content in the vertical direction(20～25 cm)distance from the infusion point,compared with topdressing only once.Considering the N absorption and utilization,soil mineral N distribution and surplus,50% of the nitrogen fertilizer used as base fertilizer,35% of the nitrogen fertilizer applied on 28 days after transplanting,15% of the nitrogen fertilizer applied on 42 days after transplanting could be recommended as the production of nitrogen fertigation system.