稻秆还田方式对麦田N2O排放的影响
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国家自然科学基金项目(40621001和40671094)和中国科学院南京土壤研究所创新领域前沿项目(ISSASIP0612)资助。


Effects of Rice Straw Returning Methods on N2O Emissions from Wheat-Growing Season
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    摘要:

    通过田间试验研究了3种稻秆还田方式(表面覆盖、均匀混施和原位焚烧)对麦田N2O排放的影响。结果表明,不同稻秆还田方式麦田N2O排放量为:表面覆盖>对照(不施稻秆)>均匀混施>原位焚烧。与对照相比,稻秆表面覆盖显著增加麦田N2O排放量,而均匀混施和原位焚烧显著减少N2O排放量。N2O排放通量与土壤温度无显著相关性,与土壤水分呈显著正相关。与对照相比,稻秆均匀混施使小麦产量显著增加,表面覆盖和原位焚烧对小麦产量无显著影响。

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    A field experiment was carried out to study the effects of three different rice straw returning methods (straw mulching, straw burning and straw incorporating) on N2O emissions from wheat field. The results showed that the values of N2O emissions were ranked in the order of straw mulching > without straw returning (control) > straw incorporating > straw burning. Compared with control treatment, straw mulching increased N2O emissions significantly (p<0.05), while straw incorporating and straw burning decreased N2O emissions significantly (p<0.05). No significant correlations were found between N2O flux and soil temperature, while there existed significant positive correlations between N2O flux and soil water content. Compared with control treatment, straw incorporating increased wheat yield significantly and straw burning and straw mulching had no significant effect on wheat yield.

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马二登,马静,徐华,曹金留,蔡祖聪,八木一行.稻秆还田方式对麦田N2O排放的影响[J].土壤,2007,39(6):870-873. MA Er-deng, MA Jing, XU Hua, CAO Jin-liu, CAI Zu-cong, YAGI Kazuyuki. Effects of Rice Straw Returning Methods on N2O Emissions from Wheat-Growing Season[J]. Soils,2007,39(6):870-873

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  • 在线发布日期: 2017-05-18
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