Abstract：Taking 25 tomato（Lycopersicon esculentum Mill.）varieties as material，we studied the differences in nitrogen absorption and utilization of different tomato varieties under the same nitrogen level．The result showed that the total nitrogen absorption and utilization amplitude of tomato was 262.8-460.1 kg?hm-2 and 281-526 kg?kg-1．The cluster analysis indicated that there were 4 varieties with low N absorption，high N utilization and high yield．They are‘Chaoyan 219’，‘Ruiqi No.1’，‘Sijifenhong’，‘Jiafen19’．The average yield was 145 754 kg?hm-2．The correlation and path analysis indicated that the total N absorption were positive linearly to tomato yield and had a dominant effect on improving tomato yield.
