期刊论文

中文

作物研究

1001-5280

2017

31

2

110-114

10.16848/j.cnki.issn.1001-5280.2017.02.02

20134320110004:高等学校博士学科点专项科研基金 2016WK2009:湖南省科技计划

本校为第一机构

为了探讨不同耕作方式对稻田生态系统CO2和CH4净交换量的影响,采用温室气体自动分析仪与循环采气式静态箱法相结合,通过对比不同生育期,对长期免耕和常规翻耕两种耕作方式下稻油两熟制农田生态系统CO2和CH4日净交换量动态变化进行分析,结果表明,免耕处理稻田系统CO2净吸收总量和CH4净排放总量分别比翻耕处理高11.75%和16.55%;稻田系统CO2和CH4净交换总量主要发生在水稻种植阶段;水稻种植阶段稻田系统CO2净交换量占净交换总量的70%左右,CH4净交换量占交换总量的99%以上。全年来看,免耕模式下稻田系统CO2吸收增加而CH4排放加剧。

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 C02 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 C...