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INFLUENCE OF RICE CULTIVAR ON METHANE EMISSION FROM PADDY FIELDS

机译：水稻品种对稻田甲烷排放的影响

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摘要

Influence of rice cultivars on CH4 emissions from a paddy field was studied using four Japonica types, two Indica types, and two Japonica/Indica F-1 hybrids. In addition, the suppression of CH4 emission by interrupting irrigation at the flowering stage was investigated. Patterns of seasonal variation in CH4 emission rates were similar among the eight cultivars. Two of the Japonica types showed the maximum and minimum CH4 emissions among the cultivars investigated. Neither the number of tillers, shoot length, shoot weight, and root weight correlated with the CH4 emission rates at the tillering and reproductive growth stages. Following temporary interruption of irrigation at the flowering stage, CH4 emission rates decreased drastically and remained at very low levels until the harvesting stage, indicating its great effectiveness for the suppression of CH4 emission from rice paddies.
机译：利用四种粳型，两种In型和两种粳/ InF-1杂种研究了水稻品种对稻田CH4排放的影响。此外，研究了在开花期中断灌溉对CH4排放的抑制作用。在八个品种中，CH4排放速率的季节性变化模式相似。在调查的品种中，两种粳稻类型显示最大和最小的CH4排放量。分ers和生殖生长阶段的分number数量，枝条长度，枝条重量和根重均与CH4排放速率无关。在开花期暂时中断灌溉之后，CH4排放速率急剧下降，直到收获期一直保持在非常低的水平，这表明其在抑制稻田CH4排放方面非常有效。

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