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首页> 中文期刊> 《农业科学学报（英文版）》 >Review grain yield and nitrogen use efifciency in rice production regions in China

Review grain yield and nitrogen use efifciency in rice production regions in China

         
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摘要

As one of the staple food crops, rice (Oryza sativaL.) is widely cultivated across China, which plays a critical role in guar-anteeing national food security. Most previous studies on grain yield or/and nitrogen use efifciency (NUE) of rice in China often involved site-speciifc ifeld experiments, or smal regions with insufifcient data, which limited the representation for the current rice production regions. In this study, a database covering a wide range of climate conditions, soil types and ifeld managements across China, was developed to estimate rice grain yield and NUE in various rice production regions in China and to evaluate the relationships between N rates and grain yield, NUE. According to the database for rice, the values of grain yield, plant N accumulation, N harvest index (HIN), indigenous N supply (INS), internal N efifciency (IEN), reciprocal internal N efifciency (RIEN), agronomic N use efifciency (AEN), partial N factor productivity (PEPN), physiological N efifciency (PEN), and recover efifciency of applied N (REN) averaged 7.69 t ha–1, 152 kg ha–1, 0.64 kg kg–1, 94.1 kg kg–1, 53.9 kg kg–1, 1.98 kg kg–1, 12.6 kg kg–1, 48.6 kg kg–1, 33.8 kg kg–1, and 39.3%, respectively. However, the corresponding values al varied tremendously with large variation. Rice planting regions and N rates had signiifcant inlfuence on grain yield, N uptake and NUE values. Considering al observations, N rates of 200 to 250 kg ha–1 commonly achieved higher rice grain yield compared to less than 200 kg N ha–1 and more than 250 kg N ha–1 at most rice planting regions. At N rates of 200 to 250 kg ha–1, signiifcant positive linear relationships were observed between rice grain yield and AEN, PEN, REN, IEN, and PFPN, and 46.49, 24.64, 7.94, 17.84, and 88.24% of the variation in AEN, PEN, REN, IEN, and PFPN could be explained by grain yield, respectively. In conclusion, in a reasonable range of N application, an increase in grain yield can be achieved accompanying by an acceptable NUE.

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  • 来源
    《农业科学学报（英文版）》 |2015年第12期|2456-2466|共11页
  • 作者

    CHE Sheng-guo; ZHAO Bing-qiang; LI Yan-ting; YUAN Liang; LI Wei; LIN Zhi-an; HU Shu-wen; SHEN Bing;

  • 作者单位

    Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

    Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

    Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

    Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

    Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

    Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

    Colege of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P.R.China;

    China Blue Chemical Ltd., Beijing 100029, P.R.China;

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