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首页> 外文会议>Effective Utilization of Agricultural Soil amp; Water Resources and Protection of Environment >Effect of Different Rice Irrigation Patterns on CH4 Emission from Paddy Field
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Effect of Different Rice Irrigation Patterns on CH4 Emission from Paddy Field

机译：不同水稻灌溉方式对稻田CH4排放的影响

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摘要

Based on observation in situ with closed static chamber technique,field experiment has been carried out to investigate the effect of different rice irrigation patterns on the law of CH4 emission from paddy field.The results show that the total CH4 emission from controlled irrigation (CI) and flooding irrigation (FI)paddy field is 24.46g·m-2 and 39.88g·m-2 respectively,and the seasonal average of CH4 emission rate is 7.96mg·m-2·h-1 and 12.98mg·m-2·h-1 respectively,and the former is 39% less than the latter.There is no statistically significant difference on the mean emission rates of CH4 between two kinds of irrigation patterns during green stage to middle tillering stage of rice (p=0.87 ＞ 0.05);while during later tillering stage to ripening stage of rice the mean CH4 emission from CI paddy fields is highly significantly lower than that from FI paddy fields (p=0.00＜0.05).The seasonal variation of CH4 emission from CI paddy fields takes on distinct one-peak pattern,occurring at initial tillering stage of rice,over 10 days earlier than that from FI paddy fields.The diurnal variation of CH4 emission from CI paddy fields appears regular afternoon-maximum model,mainly at 13:00p.m.,but that from FI paddy fields appears random model.
机译：在封闭静室技术的现场观测的基础上，进行了田间试验，研究了不同灌溉方式对稻田CH4排放规律的影响。结果表明，控制灌溉（CI）的总CH4排放量水田分别为24.46g·m-2和39.88g·m-2，CH4排放量的季节平均值为7.96mg·m-2·h-1和12.98mg·m-2 ·h-1，前者比后者少39％。水稻绿色分green期到中till期两种灌溉方式之间CH4的平均排放率无统计学差异（p = 0.87＞ 0.05）;而在水稻分till至成熟期，CI稻田的CH4排放均显着低于FI稻田（p = 0.00 ＜0.05）。在不同的单峰模式下，发生在初始t水稻的耕iller期，比FI稻田提前了10天。CI稻田CH4排放的昼夜变化呈规律的午后最大值模型，主要是在下午13:00，而FI稻田CH4排放的CH4排放呈随机变化。模型。

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  • 来源
  • 会议地点 Nanjing(CN);Nanjing(CN)
  • 作者

    XIA Guorong; rnXU Zhisheng; rnZHAO Wangda;

  • 作者单位

    Li Daoxi@State Key Laboratory of Hydrology-water Resources and Hydraulic Engineering,Hohai University Nanjing,210098,China Hohai University,Nanjing,210098,China Department of Agricultural Engineering,Nanjing,210098,China--Peng Shizhang@State Key Laboratory of Hydrology-water Resources and Hydraulic Engineering,Hohai University Nanjing,210098,China Hohai University,Nanjing,210098,China--Ding Jiali@State Key Laboratory of Hydrology-water Resources and Hydraulic Engineering,Hohai University Nanjing,210098,China Hohai University,Nanjing,210098,China Department of Agricultural Engineering,Nanjing,210098,China--Xu Junzeng@State Key Laboratory of Hydrology-water Resources and Hydraulic Engineering,Hohai University Nanjing,210098,China Hohai University,Nanjing,210098,China--He Yan@Kunshan Water C;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 农田基本建设、农垦;
  • 关键词

    rice irrigation pattern; controlled irrigation; methane emission; paddy fields; Oryza sativa;

    机译：水稻灌溉方式；控制灌溉；甲烷排放；稻田；水稻;

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