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The relationships and sensibility of wheat C:N:P stoichiometry and water use efficiency under nitrogen fertilization

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  • W. Yan

    (State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • Y. Zhong

    (State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi, P.R. China)

  • Z. Shangguan

    (State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi, P.R. China)

Abstract

A field study was conducted to investigate the variations in the carbon:nitrogen:phosphorus (C:N:P) stoichiometry of winter wheat (Triticum aestivum L.) and its relationships with wheat growth rate (r) and water use efficiency (WUE) under different rates of N fertilization. The results indicated that the growth rate and WUE of wheat significantly increased with N fertilization and were strongly correlated with the N and P contents and C:N:P ratio. The C content in wheat was relatively stable, regardless of N fertilization, and the N contents were higher in the N fertilization treatments. In addition, the P contents were higher in the treatments without N fertilization, and changes in the C:P and N:P ratios mainly depended on changes in P. The response ratio of the N:P ratio in straw was higher than that of the other investigated traits and largely depended on changes in the plant P content due to N addition.

Suggested Citation

  • W. Yan & Y. Zhong & Z. Shangguan, 2015. "The relationships and sensibility of wheat C:N:P stoichiometry and water use efficiency under nitrogen fertilization," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 61(5), pages 201-207.
    • Handle: RePEc:caa:jnlpse:v:61:y:2015:i:5:id:28-2015-pse
    DOI: 10.17221/28/2015-PSE
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    References listed on IDEAS

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    1. Zand-Parsa, Sh. & Sepaskhah, A.R. & Ronaghi, A., 2006. "Development and evaluation of integrated water and nitrogen model for maize," Agricultural Water Management, Elsevier, vol. 81(3), pages 227-256, March.
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