秸秆还田和耕作方式对土壤碳排放及冬小麦产量的影响  

Effect of Straw Returning and Tillage Methods on Soil Carbon Emission and Winter Wheat Yield

作　　者：董建丽 潘新丽 邵彦朝 刘振 宁堂原 DONG Jianli;PAN Xinli;SHAO Yanchao;LIU Zhen;NING Tangyuan(College of Agriculture,Shandong Agricultural University/Key Laboratory of Crop Water Physiology and Drought-resistant Germplasm Improvement,Ministry of Agriculture,Tai'an Shandong 271018,China)

机构地区：[1]山东农业大学农学院农业部作物水分生理与抗旱种质改良重点实验室,山东泰安271018

出　　处：《农业科技与装备》2023年第2期13-15,共3页Agricultural Science & Technology and Equipment

基　　金：山东省重大创新工程(2021CXGC010804,2020CXGC010803)。

摘　　要：试验设置翻耕(CT)、深松(SS)、旋耕(RT)、免耕(NT)4种耕作方式,秸秆还田(S)和不还田(0)2种秸秆利用方式,共8个处理,测定土壤呼吸速率、含碳量、碳排放量、冬小麦产量和单位产量排放量。结果表明:SSS可以稳定土壤呼吸速率,增加土壤有机碳含量,且其单位排放较SS0减少8.91%,小麦粒质量和产量均显著提高;CTS处理下土壤耕层有机碳含量仅次于SSS,较CT0增加44.66%,单位产量CO_(2)排放量较少且产量处于较高水平。综合来看,深松秸秆还田和翻耕秸秆还田是兼顾碳排放和小麦产量的耕作方式。In the experiment four tillage methods were used,including tillage(CT),subsoiling(SS),rotary tillage(RT),and no-tillage(NT),and two straw returning methods(S)and no straw returning(0),with a total of eight treatments.Soil respiration rate,carbon content,carbon emission,winter wheat yield,and emission per unit yield were measured.The results showed that:SSS could stabilize soil respiration rate,increase soil organic carbon content,reduce soil carbon emission per unit of SSS by 8.91%compared with SS0,and significantly increase wheat grain weight and yield;The soil organic carbon content of topsoil layer under CTS was second only to SSS and increased by 44.66%compared with CT0;The CO_(2) emission per unit yield was lower and the yield was at a high level.In summary,straw returning by subsoiling and straw returning by turn-over tillage were tillage methods that balance carbon emission and wheat yield.

关 键 词：秸秆还田 耕作方式 有机碳 碳排放 冬小麦产量 

分 类 号：S344[农业科学—作物栽培与耕作技术]