有机无机肥配施对冬小麦农田温室气体排放与氮肥利用效率的影响
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国家自然科学基金项目(51809105)、河南省软科学研究计划项目(242400410513)、水利部重大科技项目( SKR 2022020)、黄河水利科学研究院科技发展基金专项(HKF202316)和中央级公益性科研院所基本科研业务项目(HKY-JBYW-2023-26)


Effects of Combined Application of Organic and Inorganic Fertilizer on Greenhouse Gas Emission and Nitrogen Use Efficiency of Winter Wheat Farmland
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    摘要:

    为探求冬小麦农田减排优产高效的施肥模式,以冬小麦(小偃22)为研究对象,设置不施肥(KB),常规施肥(NP),有机肥等氮替代25%(25%OF)、50%(50%OF)、75%(75%OF)、100%(100%OF)无机肥共6个处理,探究不同有机无机肥配施比例对冬小麦农田温室气体排放、产量及氮肥利用效率的影响。结果表明,两个冬小麦生长期,各施肥处理中75%OF和25%OF处理CO2平均累积排放量最低,分别比NP减少7.62%和15.31%,CO2排放通量具有夏季升高、冬季降低的特征。NP处理CH4累积吸收量最高,100%OF处理CH4累积吸收量最低,有机无机肥配施处理随着有机肥配施比例的增加对CH4的吸收呈减少趋势。75%OF和100%OF处理N2O累积排放量最低,两年平均累积排放量分别比NP减少92.94%和159.47%。75%OF处理全球综合增温潜势(GWP)和温室气体排放强度(GHGI)均为最低,分别比NP降低27.19%和41.38%。与NP相比,50%OF和75%OF处理冬小麦产量在2018—2020年分别增加15.78%~17.73%和18.64%~23.07%。与NP相比,75%OF处理显著提高了冬小麦氮素吸收量和氮肥利用效率。综合考虑生态因素和经济因素,以有机肥等氮替代75%无机肥是西北地区既能实现温室气体减排又能保证冬小麦优产高效的较优施肥模式。

    Abstract:

    In order to explore the fertilization mode of emission reduction, superior yield and high efficiency, taking winter wheat (Xiaoyan 22) as the research object, the experiment set six treatments: no fertilization ( KB ), conventional fertilization ( NP ), and organic fertilizer substituting 25% (25% OF),50% (50% OF), 75% (75% OF), and 100% (100% OF) of inorganic fertilizer on equal nitrogen basis, was used to analyze the effects of different proportions of combined organic and inorganic fertilizer application on greenhouse gas emissions, yield, and nitrogen use efficiency in winter wheat farmland, put forward the combined organic-inorganic fertilization mode with the goal of emission reduction, superior yield and high efficiency. The results showed that in the two winter wheat growing seasons, the average cumulative CO2 emissions of 75% OF and 25% OF were the lowest, which was decreased by 7.62% and 15.31% compared with that of NP, respectively. The CO2 emission flux was increased in summer and decreased in winter. Among all fertilization treatments, NP had the highest CH4 absorption, while 100% OF had the lowest CH4 absorption. The absorption of CH4 in soil was decreased with the increase of the amount of organic fertilizer. The cumulative N2 O emissions of 75% OF and 100% OF were the lowest, which was decreased by 92.94% and 159.47% compared with that of NP, respectively. The global warming potential (GWP) and greenhouse gas intensity (GHGI) of 75% OF were the lowest, which was decreased by 27.19% and 41.38% compared with NP, respectively. Compared with NP, the winter wheat yield of 50% OF and 75% OF was increased by 15.78% ~ 17.73% and 18.64% ~ 23.07% , respectively, from 2018 to 2020. Compared with conventional fertilization, 75% OF significantly increased the nitrogen uptake and nitrogen utilization efficiency of winter wheat. Considering the economic and ecological factors, replacing 75% inorganic fertilizer with organic fertilizer can take into account the requirements of emission reduction, superior yield and high efficiency, and provide a reference for the better fertilization mode of winter wheat in Northwest China.

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马朋辉,宋常吉,宋静茹,陈伟伟,杨健,方鸣远,吴玉磊,胡亚瑾.有机无机肥配施对冬小麦农田温室气体排放与氮肥利用效率的影响[J].农业机械学报,2025,56(2):474-484. MA Penghui, SONG Changji, SONG Jingru, CHEN Weiwei, YANG Jian, FANG Mingyuan, WU Yulei, HU Yajin. Effects of Combined Application of Organic and Inorganic Fertilizer on Greenhouse Gas Emission and Nitrogen Use Efficiency of Winter Wheat Farmland[J]. Transactions of the Chinese Society for Agricultural Machinery,2025,56(2):474-484.

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  • 收稿日期:2024-10-30
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  • 在线发布日期: 2025-02-10
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