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首页> 外文期刊>Applied Soil Ecology >Prior nitrogen fertilization regulates CH4 emissions from rice cultivation by increasing soil carbon storage in a rapeseed-rice rotation
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Prior nitrogen fertilization regulates CH4 emissions from rice cultivation by increasing soil carbon storage in a rapeseed-rice rotation

机译：通过增加油菜稻旋转中的土壤碳储存来调节水稻种植的CH4排放量

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摘要

Given the high nitrogen (N) fertilizer input in crop production systems, the residual effects of the N fertilizer have been increasing continuously. However, its influence on methane (CH4) emissions remains unknown. A field experiment was carried out to investigate the response of CH4 emissions from rice cultivation to the preceding rapeseed N fertilization in a rapeseed-rice rotation system. The N fertilizer was applied during the rapeseed season at N loading rates of 0 and 150 kg N ha(-1). During the rice season, the original treatment during the rapeseed season was split into with and without N application subtreatments, totaling in four treatments (N0-0, N0-150, N150-150, and N150-0). Results showed that CH4 emissions were not influenced by N fertilization during the rapeseed season. However, that N fertilization remarkably enhanced CH4 emissions at the seedling stage of the rice-growing season in the fertilized or nonfertilized treatments. This result was caused by the increased soil carbon budget and soil ammonium (NH4+-N) content. The residual effects of N fertilizer contributed 20.3% (N150-0) and 17.5% (N150-150) to the cumulative CH4 emissions of the whole rice-growing season. CH4 emissions at the tillering stage were significantly (p < 0.05) affected by the current rice N fertilization, and N0-150 and N150-150 treatments were approximately 1.9-and 2.4-fold greater than N0-0 and N150-0 treatments, respectively. Moreover, the N fertilizer applied during the rapeseed and the rice seasons increased the above-and belowground biomass of rice plants. Overall, the role that residual N plays cannot be ignored in studying the regulatory mechanism of CH4 emissions from rice fields under upland-rice rotation system.
机译：考虑到作物生产系统中的高氮（N）肥料输入，N肥的剩余效果连续增加。然而，它对甲烷（CH4）排放的影响仍然未知。进行了一种田间实验，以研究油菜稻旋转系统中水稻培养对水稻培养的响应。在油菜季施用的氮气季节施用N施用率为0和150 kg n（-1）。在大米季节期间，油菜季期间的原始治疗被分成，没有N施用亚治疗，总共有四种处理（N0-0，N0-150，N150-150和N150-0）。结果表明，在油菜季期间，CH4排放不受施氮的影响。然而，N施肥在受精或非干燥的处理中，水稻生长季节的幼苗阶段的CH4排放显着增强了CH4排放。该结果是由增加土壤碳预算和土壤铵（NH4 + -N）含量引起的。 N肥料的残余效应贡献了20.3％（N150-0）和17.5％（N150-150）到整个水稻生长季节的累积CH4排放。受到当前水稻施肥影响的分蘖期的CH4排放显着（P <0.05），分别为N0-150和N150-150处理分别大约1.9〜2.4倍，分别大于N0-0和N150-0治疗。 。此外，在油菜籽和水稻期间施用的氮肥施用增加了水稻植物的上面和下面的地下生物量。总体而言，在研究高稻旋转系统下稻田的CH4排放的调节机制方面，不能忽视残留N剧性的作用。

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  • 来源
    《Applied Soil Ecology》 |2020年第1期|共10页
  • 作者

    Jiang Mengdie; Xu Peng; Zhou Wei; Shaaban Muhammad; Zhao Jinsong; Ren Tao; Lu Jianwei; Hu Ronggui;

  • 作者单位

    Huazhong Agr Univ Coll Resources &

    Environm Wuhan 43070 Peoples R China;

    Huazhong Agr Univ Coll Resources &

    Environm Wuhan 43070 Peoples R China;

    Huazhong Agr Univ Coll Resources &

    Environm Wuhan 43070 Peoples R China;

    Bahauddin Zakariya Univ Fac Agr Sci &

    Technol Dept Soil Sci Multan Pakistan;

    Huazhong Agr Univ Coll Resources &

    Environm Wuhan 43070 Peoples R China;

    Huazhong Agr Univ Coll Resources &

    Environm Wuhan 43070 Peoples R China;

    Huazhong Agr Univ Coll Resources &

    Environm Wuhan 43070 Peoples R China;

    Huazhong Agr Univ Coll Resources &

    Environm Wuhan 43070 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 土壤生态学;
  • 关键词

    Methane; Nitrogen addition; Residual effect; Upland-rice rotation;

    机译：甲烷;氮气添加;剩余效果;陆地循环旋转;

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