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首页> 外文期刊>Science of the total environment >Response of rice yield traits to elevated atmospheric CO_2 concentration and its interaction with cultivar, nitrogen application rate and temperature: A meta-analysis of 20 years FACE studies
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Response of rice yield traits to elevated atmospheric CO_2 concentration and its interaction with cultivar, nitrogen application rate and temperature: A meta-analysis of 20 years FACE studies

机译：水稻产量对大气压浓度的响应及其与品种，氮施用率和温度相互作用：20年脸研究的荟萃分析

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摘要

The Free Air CO_2 Enrichment (FACE) facility simulates future high CO_2 environment in an open field, and is considered the best approach to assess the actual response of crop production to climate change. This meta-analysis synthesizes all studies conducted under FACE conditions on rice yield response to elevated atmospheric CO_2 concentration ([CO_2]) and its interaction with cultivar. nitrogen application rate and temperature. On average, elevated [CO_2] enhanced rice yield by 16.2%, which resulted from positive response of each yield component. The yield enhancement by elevated [CO_2] of hybrid rice (24.7%) was significantly greater than conventional rice (14.2%), and among conventional rice cultivars, indica rice had a larger yield response (20.4%) than japonica rice (12.7%). The superior performance of hybrid and indica rice under FACE conditions was mainly attributed to the larger increase in spikelet density. The response of rice yield to elevated [CO_2] varied with nitrogen supply. The maximum increase of 21.1% occurred at the nitrogen application rate of 21-30 g m~(-2). Both insufficient and excess nitrogen supply negate yield increase by FACE but through different approaches. Elevated [CO_2] increased rice yield by 16.7% at ambient temperature but only 10.1 % at elevated temperature (1 -2 °C); The smaller yield increase at elevated temperature was due to the negative response of filled grain percentage and grain mass. In conclusion, atmospheric CO_2 concentration projected in the middle of this century will enhance rice yield mainly through the increase of spikelet density, whereas the magnitude of CO_2 fertilizer effect will be affected by the cultivar, nitrogen application rate and temperature.
机译：免费航空CO_2浓缩（面部）设施在开放领域模拟未来的高CO_2环境，被认为是评估作物生产实际响应到气候变化的最佳方法。该荟萃分析合成了在面部条件下进行的所有研究，对水稻产量反应的升高的大气CO_2浓度（[CO_2]）及其与品种相互作用。氮施用率和温度。平均而言，升高的[CO_2]增强了水稻产量16.2％，从每个产率组分的阳性反应产生。杂交水稻（24.7％）升高的氢水稻（24.7％）的产量增强明显大于常规水稻（14.2％），并且在常规水稻品种中，籼稻产量反应较大（20.4％）比粳稻（12.7％） 。杂种和籼稻在面部条件下的优异性能主要归因于穗尖端密度的增加。水稻产量与升高[CO_2]的响应随氮供应而变化。在氮施用率为21-30g m〜（-2）时，最大增加21.1％。不足和过量的氮气供应均由面部否定产量，而是通过不同的方法否定。在环境温度下升高[CO_2]将水稻产量增加16.7％，但升高的温度（1-2°C）仅为10.1％;升高温度较小的产量增加是由于填充的粒子百分比和晶粒质量的负响应。总之，本世纪中期预计的大气CO_2浓度主要通过穗尖密度的增加来增强水稻产量，而CO_2肥料效应的大小将受到品种，氮施用率和温度的影响。

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  • 来源
    《Science of the total environment》 |2021年第10期|142797.1-142797.10|共10页
  • 作者

    Shaowu Hu; Yunxia Wang; Lianxin Yang;

  • 作者单位

    Key Laboratory of Crop Genetics and Physiology of Jiangsu Province/Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province Yangzhou University Yangzhou 225009 PR China;

    College of Environmental Science and Engineering Yangzhou University Yangzhou 225009 PR China;

    Key Laboratory of Crop Genetics and Physiology of Jiangsu Province/Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province Yangzhou University Yangzhou 225009 PR China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Oryza sativa; Free air CO_2 enrichment; Climate change; Nitrogen fertilizer;

    机译：oryza sativa;免费空气CO_2富集;气候变化;氮肥;

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