秸秆还田对麦田土壤温室气体排放影响的Meta分析  

Meta-analysis on Effects of Straw Returning on Greenhouse Gas Emissions from Wheat Fields

作　　者：马朋辉 张会敏[1] 景明[1] 宋常吉[1] 杨智文 陈伟伟[1] 梁冰洁 胡亚瑾 MA Penghui;ZHANG Huimin;JING Ming;SONG Changji;YANG Zhiwen;CHEN Weiwei;LIANG Bingjie;HU Yajin(Yellow River Institute of Hydraulic Research,Yellow River Conservancy Commission,Zhengzhou 450003,China;Henan Engineering Research Center of Rural Water Environment Improvement,Zhengzhou 450003,China;Henan Key Laboratory of Ecological Environment Protection and Restoration of the Yellow River Basin,Zhengzhou 450003,China;College of Resources and Environment,Henan Agricultural University,Zhengzhou 450046,China)

机构地区：[1]黄河水利委员会黄河水利科学研究院,郑州450003 [2]河南省农村水环境治理工程技术研究中心,郑州450003 [3]河南省黄河流域生态环境保护与修复重点实验室,郑州450003 [4]河南农业大学资源与环境学院,郑州450046

出　　处：《农业机械学报》2025年第3期425-436,共12页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金项目(51809105);黄河水利科学研究院科技发展基金专项(HKF202316);中央公益性科研院所基本科研项目(HKY-JBYW-2023-26);河南农业大学哲学社会科学类科研创新基金项目(30201181);河南农业大学大学生创新训练计划项目(24XM0340)。

摘　　要：为系统分析不同气候条件、土壤性质和田间管理措施下秸秆还田对小麦农田土壤温室气体排放的影响,通过文献检索整合已发表论文中的田间试验数据,采用Meta分析方法定量分析不同生产条件下秸秆还田对小麦农田土壤温室气体排放的影响,同时对秸秆还田下各影响因子对温室气体排放的相对重要性进行评估。结果表明,与秸秆不还田相比,秸秆还田显著增加土壤N_(2)O排放量15.50%、CO_(2)排放量10.68%、CH_(4)吸收量26.45%(P<0.05)。当年降雨量大于1000 mm时,秸秆还田下土壤N_(2)O和CO_(2)排放量增加最少,CH_(4)吸收量增加最多,效应值分别为5.02%、9.88%和381.63%;当年均气温为0~10℃时秸秆还田下土壤CO_(2)排放量增加最少,当年均气温大于15℃时秸秆还田下土壤N_(2)O排放量增加最少、CH_(4)吸收量增加最多。秸秆还田下土壤N_(2)O排放效应值随土壤有机碳含量增加而减小,CH_(4)吸收效应值随土壤有机碳含量增加而增大。秸秆还田下土壤N_(2)O排放效应值随施氮量增加而减小,CO_(2)排放效应值随施氮量增加先增大后减小;免耕条件下,秸秆还田显著减少土壤CO_(2)排放量10.81%(P<0.05),显著增加CH_(4)吸收量91.00%(P<0.05);秸秆覆盖还田显著增加CH_(4)吸收量202.04%(P<0.05);秸秆部分还田减少土壤N_(2)O排放量11.33%,显著增加CH_(4)吸收量121.64%(P<0.05)。年降雨量、土壤全氮含量、土壤有机碳含量、氮肥施用量对秸秆还田下农田温室气体排放影响较大。研究结果可为优化秸秆还田管理实践和减少农田生态系统温室气体排放提供参考。Aiming to systematically analyze the effects of straw returning on greenhouse gas emissions from wheat farmland under different climatic conditions,soil properties and field management measures,field trial data from published papers were integrated through literature retrieval and Meta-analysis method was used to quantitatively study the effect of straw returning on greenhouse gas emissions from wheat farmland under various production conditions.Simultaneously,the relative importance of various influencing factors on greenhouse gas emissions was evaluated.The results indicated that compared with no straw returning,straw returning significantly increased soil N_(2)O emission by 15.50%,CO_(2)emission by 10.68%,and CH_(4)absorption was increased by 26.45%(P<0.05).When the annual precipitation was higher than 1000 mm,straw returning resulted in the smallest increase in soil N_(2)O and CO_(2)emissions,and the largest increase in CH_(4)absorption,with effect values of 5.02%,9.88%and 381.63%,respectively.When the annual average temperature was no more than 10℃,straw returning resulted in the smallest increase in soil CO_(2)emissions,and when the annual average temperature was higher than 15℃,straw returning resulted in the smallest increase in soil N_(2)O emissions and the largest increase in CH_(4)absorption.Under straw returning,soil N_(2)O emission effect values were decreased as soil organic carbon content was increased,while CH_(4)absorption effect values were increased with the increase of organic carbon content.Under straw returning,the N_(2)O emission effect was decreased with the increase of nitrogen application rates,while the CO_(2)emission effect was firstly increased and then decreased with the increase of nitrogen application rates.Under no-tillage conditions,straw returning significantly reduced soil CO_(2)emissions by 10.81%(P<0.05)and significantly increased CH_(4)absorption by 91.00%(P<0.05).Straw mulching significantly increased CH_(4)absorption by 202.04%(P<0.05).Partial straw returning reduced s

关 键 词：温室气体排放 土壤 秸秆还田 小麦农田 META分析 

分 类 号：S365[农业科学—作物栽培与耕作技术]