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冬小麦品种演替过程中氮素吸收和运转分配差异的研究 被引量:5

Studies on the Differences of Nitrogen Absorption,Transportation and Distribution of Winter Wheat in Varietal Development
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摘要 采用14个在不同时期推广的冬小麦品种进行试验,发现有时期品种氮素的吸收累积动态一致。在开花至成熟期,早期品种(40年代和50年代品种)氮素的吸收量较近期品种少;开花期内氮素在穗中的分配比例早期品种低于近期品种;成熟期内滞留在营养器官中的氛素量高于近期品种。随着品种演替,旗叶、茎杆和叶鞘中的氮素输出率增加,而输出氮的贡献率则与此相反。 In this paper, fourteen winter wheat (Triticum aestivum. L. )cultivar which had been spreaded in different decades were used. The results showed that the trends on nitrogenabsorption and accumulation among winter wheat cultivars spreading in different periods were idenified from flowering to maturity, the amount of nitrogen absorption in earlier cultivars (40S and 50'S)was less than that in recent ones, and so was nitrogen participation ratio in spike during flowering. Then, residental nitrogen in vegetative organs in earlier cultivars was more than that in recent ones. Nitrogen output rate from flag leaf, stem and leaf sheath were increasing,but nitrogen contribution rate was decreasing with varietal development.
作者 戴良香
出处 《河北农业大学学报》 CAS CSCD 北大核心 1998年第3期23-29,共7页 Journal of Hebei Agricultural University
基金 院青年自然基金
关键词 品种演替 氮素吸收量 氮素分布 冬小麦 Varietal development Nitrogen absorption amounts Nitrogen distribution
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  • 1徐风.小麦品种源庫生态规律的研究(续完)——我国小麦高产育种若干问题的探讨[J]安徽农学院学报,1986(01). 被引量:1
  • 2凌启鸿,杨建昌.水稻群体“粒叶比”与高产栽培途径的研究[J]中国农业科学,1986(03). 被引量:1

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