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.
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
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- Publication year
2017
- Venue
Plant Soil and Environment
- Publication date
2017-09-26
- Fields of study
Agricultural and Food Sciences, Environmental Science
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