Responses of rice yield and the fate of fertilizer nitrogen to soil organic carbon

Peng Weifu,Zeng Yongjun,S. Qinghua,H. Shan

Published 2017 in Plant Soil and Environment

ABSTRACT

Peng W.F., Zeng Y.J., Shi Q.H., Huang S. (2017): Responses of rice yield and the fate of fertilizer nitrogen to soil organic carbon. Plant Soil Environ., 63: 416–421. Soil organic carbon (SOC) plays a critical role in rice production, but its feedback to the fate of fertilizer nitrogen (N) is not clear. In this study, a pot experiment was conducted to investigate the responses of rice yield and the fate of fertilizer N to different SOC levels using 15N-labelled urea. The results showed that rice biomass, yield and the total N uptake increased significantly with increasing SOC content. Both rice N uptake from soil and urea increased significantly with increasing SOC content. The recovery rate and residual rate of fertilizer N improved significantly with increasing SOC content, leading to a reduced rate of not-specified fertilizer N. Therefore, it was concluded that high SOC could not only improve rice yield and fertilizer N recovery, but also could increase the retention of fertilizer N and decrease the not-specified N in the paddy soil.

PUBLICATION RECORD

  • Publication year

    2017

  • Venue

    Plant Soil and Environment

  • Publication date

    2017-09-26

  • Fields of study

    Agricultural and Food Sciences, Environmental Science

  • Identifiers
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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