广西师范大学学报（自然科学版） ›› 2026, Vol. 44 ›› Issue (5): 194-204.doi: 10.16088/j.issn.1001-6600.2025122303

• 农业科学 • 上一篇    下一篇

水肥管理对稻田温室气体排放的调控效应

葛玉姣1, 梁晶晓1, 梁梅英2, 粟世华2, 赵海雄2, 胡乐宁1*   

  1. 1.广西生态脆弱区环境过程与修复重点实验室/广西漓江流域绿色修复与低碳发展工程研究中心(广西师范大学), 广西 桂林 541006;
    2.桂林市农田灌溉试验中心站, 广西 桂林 541105
  • 收稿日期:2025-12-23 修回日期:2026-03-04 出版日期:2026-09-05 发布日期:2026-07-24
  • 通讯作者: 胡乐宁(1980—),女,河北保定人,广西师范大学副教授,博士。E-mail: hulening@mailbox.gxnu.edu.cn
  • 基金资助:
    “超级稻+再生稻”低碳高效栽培关键技术研究与应用(桂科AB23026046);广西师范大学2025年度国家自然科学基金联合培育项目(2025PY068)

Regulatory effect of water and fertilizer management on greenhouse gas emissions from rice paddy fields

Ge Yujiao1, Liang Jingxiao1, Liang Meiying2, Su Shihua2, Zhao Haixiong2, Hu Lening1*   

  1. 1. Guangxi Key Laboratory of Environmental Processes and Remediation in Ecologically Fragile Regions/University Engineering Research Center of Green Remediation and Low Carbon Development for Lijiang River Basin (Guangxi Normal University), Guilin Guangxi 541006, China;
    2. Guilin Farmland Irrigation Experiment Station, Guilin Guangxi 541105, China
  • Received:2025-12-23 Revised:2026-03-04 Online:2026-09-05 Published:2026-07-24

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摘要： 为探求不同水肥制度对稻田温室气体(CH4、N2O、CO2)排放的影响,本文以传统水肥管理为对照,设置3种灌水模式(雨养、浅薄、间歇)与3种施肥量(低、适中、高)交互组合处理,开展双季水稻全生育期田间试验。采用静态箱-气相色谱法监测水稻生育期内温室气体排放通量,进而计算并明确其全球变暖潜势与温室气体排放强度。结果表明,各处理的N2O累积排放量均低于传统水肥管理,其中,减少CO2排放量最优的水肥管理模式为浅薄灌溉适中施肥量。间歇灌溉配施适中施肥量下的水稻产量达15.58 t·hm-2,该模式可有效降低CH4排放,减排率在各处理中最高,达80.49%。综上,间歇灌溉配施适中施肥量不仅显著降低全球综合增温潜势及温室气体排放强度,还是本文中协调水稻产量与生态减排的最优水肥管理模式。

关键词: 稻田, 水肥管理, 温室气体, 甲烷, 氧化亚氮, 二氧化碳

Abstract: The present study was conducted to investigate the effects of different water and fertiliser regimes on greenhouse gas emissions (CH4, N2O, CO2) from paddy fields. To this end, traditional water and fertiliser management was employed as the control. The experiment involved the cross-pollination of three irrigation patterns (rainfed, shallow, intermittent) with three fertilizer application rates (low, moderate, high) to create an array of interactive treatment combinations. An experiment was conducted over the course of the entire growth period of double-cropped rice as a full-season field experiment. The monitoring of greenhouse gas emission fluxes throughout the rice growth cycle is to be conducted using static chamber-gas chromatography, with the subsequent calculation and determination of their global warming potential and greenhouse gas emission intensity. The findings suggested that the cumulative N2O emissions under all treatments in this study were lower than those under conventional water and fertiliser management. The most effective strategy for minimising CO2 emissions through water and fertiliser management involves the implementation of shallow irrigation techniques and the moderation of fertilisation rates. The implementation of intermittent irrigation in conjunction with moderate fertilization resulted in a rice yield of 15.58 t·hm-2. This approach led to a substantial reduction in CH4 emissions, achieving the highest emission reduction rate among all treatments at 80.49%. The findings of this study demonstrate that a combination of intermittent irrigation and moderate fertilization has the potential to significantly reduce the global aggregate warming potential and greenhouse gas emission intensity. This approach is identified as the optimal treatment in this study for balancing rice yield with ecological emission reductions.

Key words: paddy rice, water and fertilizer management, greenhouse gas, methane, nitrous oxide, carbon dioxide

中图分类号:  S511

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