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Effects of nitrogen application stage on grain yield and nitrogen use efficiency of high-yield summer maize

Author

Listed:
  • P. Lü

    (State Key Laboratory of Crop Biology and College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P.R. China)

  • J.W. Zhang

    (State Key Laboratory of Crop Biology and College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P.R. China)

  • L.B. Jin

    (State Key Laboratory of Crop Biology and College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P.R. China)

  • W. Liu

    (State Key Laboratory of Crop Biology and College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P.R. China)

  • S.T. Dong

    (State Key Laboratory of Crop Biology and College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P.R. China)

  • P. Liu

    (State Key Laboratory of Crop Biology and College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P.R. China)

Abstract

This study aims to explore the optimum nitrogen (N) application method by analyzing effects of variable N application stages and ratios on the N absorption and translocation of high-yield summer maize (DH661). The study included field experiments and 15N isotopic dilutions for pot experiments. Results showed that the yield was not increased in a one-off N application at the jointing stage. The uptake of fertilizer-derived N in the grain increased with the increasing of N applied times. Compared to a single or double application, total N uptake (Nup) and biomass increased significantly by supplying N at the six-leaf stage (V6), ten-leaf stage (V10) and 10 days after anthesis in ratios of 3:5:2 and 2:4:4. The fertilizer-derived recovery rates were 67.5% and 78.1%, respectively. The uptake and utilization of fertilizer-derived N was enhanced by increasing the recovery rate of N supplied after anthesis, and reducing the absorption of soil-derived N. Therefore, the 2:4:4 application ratios was the optimal N application method.

Suggested Citation

  • P. Lü & J.W. Zhang & L.B. Jin & W. Liu & S.T. Dong & P. Liu, 2012. "Effects of nitrogen application stage on grain yield and nitrogen use efficiency of high-yield summer maize," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 58(5), pages 211-216.
    • Handle: RePEc:caa:jnlpse:v:58:y:2012:i:5:id:531-2011-pse
    DOI: 10.17221/531/2011-PSE
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    Cited by:

    1. L.J. Li & D.H. Zeng & R. Mao & Z.Y. Yu, 2012. "Nitrogen and phosphorus resorption of Artemisia scoparia, Chenopodium acuminatum, Cannabis sativa, and Phragmites communis under nitrogen and phosphorus additions in a semiarid grassland, China," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 58(10), pages 446-451.

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