Journal of Integrative Agriculture ›› 2026, Vol. 25 ›› Issue (10): 4102-4113.DOI: 10.1016/j.jia.2025.02.047

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地膜覆盖在气候变化和氮沉降下可提高玉米产量并减缓氨气排放

  

  • 收稿日期:2024-11-01 修回日期:2025-02-24 接受日期:2025-01-20 出版日期:2026-10-20 发布日期:2026-09-21

Plastic film mulching increases maize yields and mitigates NH3 emissions under climate change and N deposition

Kaiping Zhang1, 2, Yufei Li1, Li Zhang3, 4, 5, Pingxing Wan1, Ning Chai1, Yuling Li1, Wucheng Zhao1, Matthew Tom Harrison6, Yakov Kuzyakov7, 8, 9, Fengmin Li1, 10, Feng Zhang1#   

  1. 1 State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems/College of Ecology, Lanzhou University, Lanzhou 730000, China

    2 School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China

    3 Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College, Yangzhou University, Yangzhou 225009, China

    4 Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China

    5 Research Institute of Rice Industrial Engineering Technology, Yangzhou University, Yangzhou 225009, China

    6 Tasmanian Institute of Agriculture, University of Tasmania, Newnham Drive, Launceston, Tasmania 7428, Australia

    7 Department of Soil Science of Temperate Ecosystems/Department of Agricultural Soil Science, University of Goettingen, Göttingen 37077, Germany

    8 Peoples Friendship University of Russia, RUDN University, Moscow 117198, Russia

    9 Institute of Environmental Sciences, Kazan Federal University, 420049 Kazan, Russia

    10 College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China

  • Received:2024-11-01 Revised:2025-02-24 Accepted:2025-01-20 Online:2026-10-20 Published:2026-09-21
  • About author:#Correspondence Feng Zhang, E-mail: zhangfeng@lzu.edu.cn
  • Supported by:

    This study was supported by the National Natural Science Foundation of China (32071550), the “111” Programme, China (BP0719040), the Key Research and Development Program of Gansu Province, China (22YF7WA012), the Outstanding Graduate Student “Innovation Star” Project of Gansu Provincial Department of Education, China (2025CXZX-096), and the Science and Technology Major Project of Gansu Province, China (22ZD6NA007).  It was a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions, China (PAPD).  This work was also supported by the Supercomputing Center of Lanzhou University and Core Facility of School of Life Sciences, Lanzhou University, the RUDN University Strategic Academic Leadership Program, Russia, and the Strategic Academic Leadership Program ‘Priority 2030’ of the Kazan Federal University, Russia.  Yakov Kuzyakov thanks the Russian Science Foundation Project (19-77-30012).

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摘要：

地膜覆盖（PFM）通过减少水分损失和提高土壤温度，在半干旱地区提高了作物产量，而这些地区的作物生产也是氨气（NH3）排放的重要来源。高温下强的氮矿化作用与地膜对NH3扩散的阻隔效应之间存在着复杂的交互作用，这使得PFM对NH3排放的影响机制尚不明确。因此，本文的研究目标是：（1）评估PFM对田间条件下NH3排放的影响；（2）利用反硝化-分解模型（DNDC）识别气候变化和大气氮沉降下玉米产量和NH3排放的变化。实验包括四种处理： （1）无地膜覆盖且不施氮肥（control）；（2）地膜覆盖且不施氮肥（PFM）；（3）施氮肥且不使用地膜覆盖（N）；（4）地膜覆盖且施氮肥（PFM+N）。结果表明，PFM在与氮肥结合使用时，提高了玉米产量（211%）和产量的稳定性。PFM通过三种机制减少了35%的NH3排放：（1）PFM的高水分含量饱和了土壤孔隙，阻碍了NH3向大气的扩散；（2）PFM的高温湿润条件加速了硝化作用，从而提高了尿素水解过程中的pH缓冲能力；（3）PFM形成的物理屏障减少了土壤和空气之间的NH3交换。NH3的日排放随着土壤温度、NH4+含量和pH值的增加而增加；而在N处理下，随着土壤湿度的增加，NH3日排放下降。在PFM+N处理下，日NH3排放随着NH4+含量的增加而增加。通过参数化的DNDC模型可以很好地模拟产量和日NH3排放。PFM+N在共享社会经济路径（SSP）情景和氮沉降条件下，提高了产量并减少NH3排放。随着氮沉降的增加，PFM+N下的产量也有所增加；在高辐射强迫情景（SSP5-8.5）下，NH3排放则随着氮沉降的增加而增加。总之，PFM不仅能够提高产量并减缓NH3排放，还可能在未来气候条件下实现类似的效益。

Abstract:

Plastic film mulching (PFM) increases crop yields in semi-arid regions by reducing water losses and increasing soil temperatures, while crop production in these areas also serves as a significant source of ammonia (NH3) emissions.  The effects of PFM on NH3 emissions are mostly unknown because of interactions between greater N mineralization at higher temperatures and the film cover preventing NH3 diffusion.  Therefore, our objectives were to (1) evaluate the effects of PFM on NH3 emissions under field conditions, and (2) identify the maize yield and NH3 emissions under climate change and atmospheric N deposition conditions using the DeNitrification-DeComposition (DNDC) model.  The experiment included four treatments: (1) no plastic film mulching without N fertilization (control), (2) plastic film mulching without N fertilization (PFM), (3) N fertilization without plastic film mulching (N), and (4) plastic film mulching with N fertilization (PFM+N).  The PFM increased maize yields by 211% and yield stability across the years when combined with N fertilization.  PFM reduced NH3 emissions by 35% through three mechanisms: i) the high water content under PFM saturates soil pores, hindering NH3 gas movement to the atmosphere; ii) the hot and wet conditions under PFM accelerate the nitrification rate, thus increasing pH buffering capacity during urea hydrolysis; and iii) the physical barrier created by PFM reduces NH3 exchange between soil and air.  Daily NH3 emissions increased with soil temperature, NH4+ content, and pH, but declined with soil moisture under N fertilization.  The NH3 emissions under PFM+N increased with NH4+ content.  The parameterized DNDC model simulated the yield and daily NH3 emissions very well.  PFM+N increased yield and reduced NH3 emissions under the shared socioeconomic pathway (SSP) scenario and with N deposition.  Yield under PFM+N increased with increasing N deposition, whereas NH3 emissions under PFM+N increased only under the high N deposition (N4) scenario compared with the no-deposition scenario, with no apparent increase under the N2 and N3 scenarios.  In conclusion, PFM increases yields and mitigates NH3 emissions, and it can also potentially achieve similar benefits under future conditions.

Key words: climate change , N deposition , DNDC , modeling , maize yield , NH3 emission