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首页> 外文期刊>Atmospheric environment >Effect of ammonium-based, non-sulfate fertilizers on CH_4 emissions from a paddy field with a typical Chinese water management regime
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Effect of ammonium-based, non-sulfate fertilizers on CH_4 emissions from a paddy field with a typical Chinese water management regime

机译：铵基非硫酸盐肥料对典型中国水管理制度下稻田CH_4排放的影响

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摘要

The effects of ammonium-based, non-sutfate fertilizers, such as urea and/or ammonium phosphate (NH_4H_2PO_4), on methane (CH_4) emissions from paddy rice fields deserve attention, as they are being used increasingly for rice cultivation. A four-year field campaign was conducted in the Yangtze River Delta from 2004 to 2007 to assess the effects of different application rates of urea plus NH_4H_2PO_4 on the CH4 emissions from a paddy rice field. The experimental field was under a typical Chinese water regime that follows a flooding-midseason drainage-reflooding-moist irrigation mode. Over the course of four years, the mean cumulative CH_4 emissions during the rice seasons were 221,136 and 112 kg C ha~(-1) for nitrogen addition rates of 0,150 and 250 kg N ha~(-1), respectively. Compared to the treatment without nitrogen amendments, the 150 kg N ha~(-1) decreased the CH_4 emissions by 6-59% (P< 0.01 in one year, but not statistically significant in the others). When the addition rate was further increased to 250 kg N ha~(-1), the CH_4 emissions were significantly reduced by 35-53% (P < 0.01) compared to the no-nitrogen treatment Thus, an addition rate of 250 kg N ha~(-1), which has been commonly adopted in the delta region in the past two decades, can be regarded as an effective management measure as regards increasing rice yields while reducing CH_4 emissions. Considering that doses of ammonium-based, non-sulfate fertilizers higher than 250 kg N ha ' currently are, and most likely will continue to be, commonly applied for paddy rice cultivation in the Yangtze River Delta and other parts of China, the inhibitory effects on CH_4 emissions from rice production are expected to be pronounced at the regional scale. However, further studies are required to provide more concrete evidence about this issue. Moreover, further research is needed to determine whether N management measures are also effective in view of net greenhouse gas fluxes (including CH_4, nitrous oxide, ammonia emissions, nitrate leaching and N loss from denitriflcation).
机译：铵基非硫酸盐肥料（例如尿素和/或磷酸铵（NH_4H_2PO_4））对稻田甲烷（CH_4）排放的影响值得关注，因为它们正越来越多地用于水稻种植。 2004年至2007年，在长江三角洲进行了为期四年的田间运动，以评估尿素加NH_4H_2PO_4的不同施用量对稻田CH4排放的影响。该试验场是在典型的中国水情下进行的，该水情遵循汛期中排水，注洪湿润灌溉的模式。在四年的过程中，氮素添加量分别为0,150和250 kg N ha〜（-1）时，水稻季节CH_4的平均累积排放量分别为221,136和112 kg C ha〜（-1）。与不使用氮素改良剂的处理相比，150 kg N ha〜（-1）减少了CH_4排放量6-59％（一年中P <0.01，而其他年份则无统计学意义）。当添加量进一步增加到250 kg N ha〜（-1）时，与无氮处理相比，CH_4排放显着降低了35-53％（P <0.01）。因此，添加量为250 kg N在过去的二十年中，三角洲地区普遍采用的ha〜（-1）在增加稻米产量，减少CH_4排放方面可以被视为一种有效的管理措施。考虑到目前，并且很可能将继续使用高于250千克N ha'的铵基非硫酸盐肥料，在长江三角洲和中国其他地区的水稻种植中普遍使用，其抑制作用预计稻米生产中CH_4的排放量将在区域范围内显着增加。但是，需要进一步研究以提供有关此问题的更具体证据。此外，鉴于温室气体净通量（包括CH_4，一氧化二氮，氨气排放，硝酸盐淋失和反硝化过程中的氮损失），需要进一步研究以确定氮管理措施是否也有效。

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  • 来源
    《Atmospheric environment》 |2011年第5期|p.1095-1101|共7页
  • 作者

    Haibo Dong; Zhisheng Yao; Xunhua Zheng; Baoling Mei; Baohua Xie; Rui Wang; Jia Deng; Feng Cui; Jianguo Zhu;

  • 作者单位

    State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences. Beijing 100029, China;

    State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences. Beijing 100029, China;

    State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences. Beijing 100029, China;

    State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences. Beijing 100029, China;

    State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences. Beijing 100029, China;

    State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences. Beijing 100029, China;

    State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences. Beijing 100029, China;

    State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences. Beijing 100029, China;

    State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, Nanjing 210008, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    methane; paddy field; nitrogen fertilizer; intermittent irrigation;

    机译：甲烷稻田;氮肥间歇灌溉;

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