摘要
试验设置深翻秸秆不还田(PT)、深翻秸秆还田(PTS)、免耕秸秆不还田(NT)和免耕秸秆还田(NTS)4个处理,测定收获后耕层0~30 cm剖面土壤容重、有机碳含量及其储量,以探究不同耕作方式对晋中地区玉米田土壤有机碳储量的影响。结果表明,NTS和NT处理下土壤容重显著高于PT和PTS处理;NTS处理0~20 cm土层有机碳含量及其储量均最高,而PT处理20~30 cm土层有机碳含量及储量均显著高于其他处理;从0~30 cm剖面来看,NTS处理土壤有机碳储量显著高于其他处理。采用免耕秸秆还田措施可能是晋中地区玉米田潜在的土壤固碳途径。
Effects of different tillage treatments on the stock of soil organic carbon(SOC)in maize field in Jinzhong region was assessed. An experiment, including plow tillage with residue removed(PT), plow tillage with residue incorporation(PTS), no-tillage with residue removed(NT), and no-tillage with residue incorporation(NTS)was established to assess soil bulk density, the concentration of soil organic carbon and SOC stock in the 0-30 cm soil profile. The results showed that soil bulk density under NTS and NT treatments were significantly higher than those under PT and PTS treatments. There were the highest SOC concentration and its stock under NTS in the 0-20 cm soil profile, however, which were significantly highest under PT in 20-30 cm soil layer. In 0-30 cm soil profile, the SOC stock was significantly higher under NTS treatment compared with other tillage treatments. Therefore, measures of no-tillage with residue incroporation may be a potential solution for the enhancement of SOC stock in maize field in Jinzhong region.
作者
祁泽伟
刘彩霞
李娜娜
梁改梅
薛建福
QI Zewei;LIU Caixia;LI Nana;LIANG Gaimei;XUE Jianfu(College of Agronomy,Shanxi Agricultural University,Shanxi Key Laboratory of Crop Ecology and Physiology of Dryland Cultivation,Taigu 030801,China;Research Center of Dryland Agriculture,Shanxi Academy of Agricultural Sciences,Taiyuan 030031,China)
出处
《山西农业科学》
2020年第2期233-237,共5页
Journal of Shanxi Agricultural Sciences
基金
山西省优秀博士来晋工作奖励资金科研项目（SXYBKY201730）
“十二五”农村领域国家科技计划项目（2015BAD22B03-2）
山西省农业科学院农业科技创新研究课题（YCX2018408,YCX2018409）
关键词
耕作方式
土壤有机碳
层化率
晋中地区
tillage method
soil organic carbon
stratification ratio
Jinzhong region
