以吉林省市场上常见的25个番茄品种为材料,研究了同一氮素水平不同番茄品种氮素吸收利用差异.结果表明:番茄总吸氮量和氮素利用效率的变幅分别为262.8～460.1 kg·hm-2和281～526 kg·kg-1.聚类分析表明,吸氮能力较弱、氮素利用效率较高、产量高的品种有4个:朝研219、瑞琦1号、四季粉红、佳粉19,产量平均值为145 754 kg· hm-2.相关分析及通径分析表明,总吸氮量与番茄产量呈显著正相关,并对提高番茄产量起主导作用.%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-1 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.l', ' Sijifenhong', ' Jiafenl9'. 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.
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机译：不同氮素籽粒生产效率类型籼稻品种氮素吸收利用的差异Difference of Nitrogen Uptake and Use Efficiency in Conventional Indica Rice Cultivars with Different Nitrogen Use Efficiency for Grain Output
机译：不同播期条件下高产冬小麦品种氮素吸收利用及转运效率分析Analysis on Absorption, Utilization and Transfer Efficiency of Nitrogen in High-yield Wheat Cultivars at Different Sowing Dates
