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首页> 外文期刊>Environmental Technology >Biochar application mode influences nitrogen leaching and NH_3 volatilization losses in a rice paddy soil irrigated with N-rich wastewater
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Biochar application mode influences nitrogen leaching and NH_3 volatilization losses in a rice paddy soil irrigated with N-rich wastewater

机译：生物炭施用方式影响富氮废水灌溉的稻田土壤中的氮淋失和NH_3挥发损失

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摘要

Impacts of biochar application mode on nitrogen (N) leaching, ammonia (NH3) volatilization, rice grain yield and N use efficiency (NUE) are not well understood. Therefore, a field experiment was conducted to evaluate those impacts in a rice paddy soil received 225kgNha(-1) from either urea or N-rich wastewater. One treatment received 10tha(-1) biochar with the basal fertilization, and the other received same total amount of biochar but split applied with the three split N applications with same ratio as N fertilizer split ratio (40%, 30% and 30%). Results showed that N leaching loads were 4.20-6.22kgha(-1). Biochar one-time application reduced N leaching by 23.1%, and biochar split application further reduced N leaching by 32.4%. Total NH3 volatilization loss was 15.5-24.5kgha(-1). Biochar one-time application did not influence the NH3 volatilization, but biochar split application stimulated the cumulative NH3 volatilization by 57.7%. Both biochar treatments had no influence on NUE and rice grain yield. In conclusion, biochar application mode indeed influences the N leaching and NH3 volatilization in rice paddy soils, and biochar one-time application should be recommended for reducing N leaching without increasing NH3 volatilization.
机译：生物炭施用方式对氮（N）浸出，氨（NH3）挥发，水稻籽粒产量和氮利用效率（NUE）的影响尚不清楚。因此，进行了现场试验，以评估从尿素或富氮废水中接收到225kgNha（-1）的稻田土壤中的影响。一种处理的基础施肥量为10tha（-1）生物炭，另一种处理的生物炭总量相同，但三份氮肥的分割施用量与氮肥的分割比率相同（分别为40％，30％和30％） 。结果表明，N淋洗负荷为4.20-6.22kgha（-1）。一次性施用生物炭减少了23.1％的氮淋失，而生物炭拆分施用进一步减少了32.4％的氮淋失。 NH3的总挥发损失为15.5-24.5kgha（-1）。一次性施用生物炭不会影响NH3挥发，但生物炭分次施用会使累积的NH3挥发增加57.7％。两种生物炭处理对NUE和稻米产量没有影响。总之，生物炭施用方式的确会影响稻田土壤中的氮淋失和NH3挥发，因此，建议一次性施用生物炭以减少氮的淋失而不增加NH3的挥发。

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  • 来源
    《Environmental Technology》 |2018年第16期|2090-2096|共7页
  • 作者

    Sun Haijun; Min Ju; Zhang Hailin; Feng Yanfang; Lu Kouping; Shi Weiming; Yu Min; Li Xuewen;

  • 作者单位

    Foshan Univ, Dept Hort, Foshan, Peoples R China;

    Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, 71 Beijing East Rd, Nanjing 210008, Jiangsu, Peoples R China;

    Oklahoma State Univ, Dept Plant & Soil Sci, Stillwater, OK 74078 USA;

    Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing, Jiangsu, Peoples R China;

    Zhejiang A&F Univ, Sch Environm & Resource Sci, Key Lab Soil Contaminat Bioremediat Zhejiang Prov, Linan, Peoples R China;

    Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, 71 Beijing East Rd, Nanjing 210008, Jiangsu, Peoples R China;

    Foshan Univ, Dept Hort, Foshan, Peoples R China;

    Foshan Univ, Dept Hort, Foshan, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Biochar; NH3 volatilization; nitrogen leaching; nitrogen usage efficiency; rice paddy soil;

    机译：生物炭;NH3挥发;氮淋失;氮素利用效率;水稻土;

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