[Objective]The aim was to provide a theoretical basis for the rational configuration of ratio of row spacing to intrarow spacing(RS/IS)of double-cropping rice.[Methods]With early rice‘Ganxin 203’and‘Zhongjiazao 17’and late rice‘Ganxin 688’and‘Wufengyou T025’as materials,the effects of RS/IS on yield,nitrogen accumulation and utilization were studied in the same planting density of31.20×104hills/hm2.[Results]The results showed that yield of early rice was higher in RS/IS2.8(30.0 cm×10.7 cm)and RS/IS2.0(25.0 cm×12.8 cm)treatment,and lower in RS/IS5.0(40.0 cm×8.0 cm)and RS/IS1.3(20.0 cm×16.0 cm)treatment,while late rice were higher in RS/IS5.0and RS/IS2.0treatment,and lower in RS/IS2.8and RS/IS1.3treatment.Total nitrogen accumulation and apparent utilization ratio of nitrogen of early rice were higher in RS/IS2.0treatment and lower in RS/IS5.0treatment,while,for late rice were higher in RS/IS2.8treatment and lower in RS/IS5.0treatment.Nitrogen requirement for 100 kg grain production of early rice was higher in RS/IS1.3treatment and lower in RS/IS2.0treatment,while,for late rice were higher in RS/IS2.8treatment,lower in RS/IS5.0treatment.[Conclusion]In sum,4 varieties of early and late rice obtained higher yield in 25.0 cm×12.8 cm and lower yield in 20.0 cm×16.0 cm,and total nitrogen accumulation,nitrogen requirement for 100 kg grain production and apparent utilization ratio of nitrogen were all lower in 40.0 cm×8.0 cm. [Objective] The aim was to provide a theoretical basis for the rational configuration of ratio of row spacing to intrarow spacing (RS / IS) of double-cropping rice. [Methods] With early rice’Ganxin 203’and’Zhongjiazao 17’and late rice’Ganxin 688’and’Wufengyou T025’as materials, the effects of RS / IS on yield, nitrogen accumulation and utilization were studied in the same planting density of 31.20 × 104hills / hm2. [Results] The results showed that yield of early rice was higher in RS / IS 2.8 (30.0 cm × 10.7 cm) and RS / IS 2.0 (25.0 cm × 12.8 cm) treatment, and lower in RS / IS 5.0 /IS1.3(20.0cm × 16.0cm) treatment, while late rice were higher in RS / IS5.0and RS / IS2.0treatment, and lower in RS / IS2.8and RS / IS1.3treatment.Total nitrogen accumulation and apparent utilization ratio of nitrogen of early rice were higher in RS / IS 2.0 treatment and lower in RS / IS 5.0 treatment, while, for late rice were higher in RS / IS 2.8 treatment and lower in RS / IS 5.0 treatment. Nitrogen requirement for 100 kg g rain production of early rice was higher in RS / IS1.3 treatment and lower in RS / IS2.0 treatment, while, for late rice were higher in RS / IS2.8 treatment, lower in RS / IS5.0 treatment. [Conclusion] In sum, 4 varieties of early and late rice obtained higher yield in 25.0 cm × 12.8 cm and lower yield in 20.0 cm × 16.0 cm and total nitrogen accumulation, nitrogen requirement for 100 kg grain production and the apparent utilization ratio of nitrogen were all lower in 40.0 cm × 8.0 cm.