| 杂交稻对产量和氮素利用率影响的荟萃分析 |
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| 引用本文： | 廖萍,孟轶,翁文安,黄山,曾勇军,张洪程. 杂交稻对产量和氮素利用率影响的荟萃分析[J]. 中国农业科学, 2022, 55(8): 1546-1556. DOI: 10.3864/j.issn.0578-1752.2022.08.006 |
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| 作者姓名： | 廖萍 孟轶 翁文安 黄山 曾勇军 张洪程 |
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| 作者单位： | 1江苏省作物栽培生理重点实验室/江苏省粮食作物现代产业技术协同创新中心/江苏省优质粳稻产业工程研究中心/扬州大学,江苏扬州 2250092作物生理生态与遗传育种教育部重点实验室/江西农业大学,南昌 330045 |
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| 基金项目： | 国家自然科学基金（31960397）； |
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| 摘 要： | 【目的】与常规稻相比,杂交稻具有更高的产量潜力。但是,对杂交稻和常规稻在氮素利用率上的差异尚存争议。本研究采用Meta分析以明确杂交稻对产量和氮素利用率的影响。【方法】以常规稻为对照,杂交稻为处理,筛选出56篇文献,建立了包含367对观测值的数据库。利用Meta分析方法,针对不同杂交稻类型、氮肥施用量及施用次数、土壤全氮、土壤碳氮比和土壤质地,探究了杂交稻对产量和氮素利用率的影响。【结果】与常规稻相比,杂交稻显著提高了产量（+11%）和生物量（+14%）,而对收获指数无显著性影响。在各氮肥施用水平下,与常规稻相比,杂交稻均显著提高了产量;然而,随着氮肥施用量的增加,杂交稻的增产优势显著降低。另外,与常规稻相比,杂交稻显著提高了氮素吸收（+8.1%）、氮素生理利用率（+2.9%）和氮素回收率（+3.6个单位）。【结论】与常规稻相比,杂交稻能够提高产量和氮素利用率。本研究为评估杂交稻的推广应用对我国水稻产量和氮素利用率的影响提供了数据支撑。
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| 关 键 词： | 杂交稻 常规稻 产量 氮素利用率 荟萃分析 |
| 收稿时间： | 2021-06-28 |
Effects of Hybrid Rice on Grain Yield and Nitrogen Use Efficiency: A Meta-Analysis |
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| LIAO Ping,MENG Yi,WENG WenAn,HUANG Shan,ZENG YongJun,ZHANG HongCheng. Effects of Hybrid Rice on Grain Yield and Nitrogen Use Efficiency: A Meta-Analysis[J]. Scientia Agricultura Sinica, 2022, 55(8): 1546-1556. DOI: 10.3864/j.issn.0578-1752.2022.08.006 |
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| Authors: | LIAO Ping MENG Yi WENG WenAn HUANG Shan ZENG YongJun ZHANG HongCheng |
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| Affiliation: | 1Jiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Industrial Engineering Research Center of High Quality Japonica Rice/Yangzhou University, Yangzhou 225009, Jiangsu2Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education/Jiangxi Agricultural University, Nanchang 330045 |
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| Abstract: | 【Objective】Hybrid rice has a higher yield potential than inbred rice, but the difference in nitrogen (N) use efficiency between hybrid rice and inbred rice remains unclear. The objective of this study was to examine the effects of hybrid rice on yield and N use efficiency through meta-analysis techniques. 【Method】The peer-reviewed articles were collected, which included inbred rice as the control in comparison with a hybrid rice treatment. In total, the dataset included 56 studies involving 367 paired observations. Then, the meta-analysis was conducted to identify the response of grain yield and N use efficiency to hybrid rice as affected by hybrid type, N rate, the number of N application, soil total N content, the ratio of soil organic carbon to N, and soil texture. 【Result】Overall, the hybrid rice significantly increased rice yield (+11%) and biomass (+14%), but did not affect harvest index compared with inbred rice. Hybrid rice could improve rice yield relative to inbred rice under various N rates. However, the increase in rice yield under hybrid rice reduced with increasing N application rates. Moreover, the hybrid rice significantly increased N uptake, N physiological efficiency, and N recovery efficiency by 8.1%, 2.9%, and 3.6 units, respectively. 【Conclusion】Hybrid rice could improve yield and N use efficiency relative to inbred rice, which provided an insight to evaluate the effect of hybrid rice on grain yield and N use efficiency in China. |
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| Keywords: | hybrid rice inbred rice yield N use efficiency meta-analysis |
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