作物研究2017，Vol.31Issue(2)：110-114,5.DOI:10.16848/j.cnki.issn.1001-5280.2017.02.02
不同耕作模式下稻—油系统CO2和CH4净交换量动态变化研究
Effects of Different Tillage Methods on CO2 and CH4 Net Exchange in Rice-oilseed Rape Cropping System
摘要
Abstract
To study the effect of different tillage methods on Net Ecosystem Exchange (NEE) of CO2 and CH4 fluxes in daytime from farmland ecosystem,the effects of long-term no-tillage (NT) and conventional tillage (CT) treatments on daily CO2 and CH4 NEE during the different development stages of rice and oilseed rape were analyzed.The results showed that there was no significant difference in the daily CO2 and CH4 NEE between NT and CT.Over the entire season,the CO2 NEE of NT (net uptake) was higher than that of CT by 11.75 ％,and the CH4 NEE of NT (emission) was higher than that of CT by 16.55％.CO2 NEE during the rice growing season almost accounted for 70％ of the total CO2 NEE,and CH4 NEE during the rice growing season accounted for more than 99％.The results suggested that most CO2 and CH4 NEE occur during rice growing season.During rice-oilseed rape cropping period,CO2 uptake and CH4 emission of the farmland ecosystem were increased by NT.关键词
稻田系统/耕作方式/CO2/CH4/净交换量Key words
farmland ecosystem/tillage method/CO2/CH4/net ecosystem exchange分类
农业科技引用本文复制引用
成小琳,唐先亮,魏甲彬,周玲红,徐华勤,邹应斌,唐剑武..不同耕作模式下稻—油系统CO2和CH4净交换量动态变化研究[J].作物研究,2017,31(2):110-114,5.基金项目
教育部博士点基金(20134320110004) （20134320110004）
湖南省科技计划项目(2016WK2009). （2016WK2009）
