摘要
采用计算机控制的全自动气相色谱监测系统，对中稻田4个处理进行了130个日夜的甲烷排放量的监测，各处理中以无机肥＋绿肥＋长期淹灌处理的甲烷排放通量最高，为464．0mg／m2·d，最低的为无机肥＋绿肥＋间歇灌溉处理，只有180．5mg／m2·d。水稻生长前半期是甲烷排放高峰期，除长期淹灌的处理外，其它处理在移栽后65d的排放量约占总排放量的77％～93％。甲烷排放量与气温呈正相关。搁田可明显减少甲烷的排放量。
During 130 days of middle-season rice growing period, the methane emission was diel determined by the computer automatic controlled analysis system on rice fields with the four patterns of water and fertilizer management. Under the inorganic fertilizer + green manure, continuously irrigation, the methane flux was 464. 0 mg/m2 ·d, that was the most amount compared with other treatments. The lowest methane flux was 180. 5 mg/m2·d in inorganic fertilizer + green manure, intermittent irrigation. Under the inorganic fertilizer + green manure, commonly irrigation and inorganic fertilizer, commonly irrigation , the methane fluxes were 260.1 and 198. 9mg/m2·d respectively. During 65 days after transplanting, except treatment of continuously irrigation, the methane emission amount was about 77%～93% to total emission of the rice growing season. Amount of methane emission was closely related to the air temperature. Draining rice field could reduce the methane emission.
出处
《中国水稻科学》
CAS
CSCD
北大核心
1997年第3期170-174,共5页
Chinese Journal of Rice Science
基金
联合国开发计划署全球环境部资助!GEF/UNDP
IRRI协调项目
关键词
气温
水肥管理
中稻田
甲烷排放
air temperature, green manure , irrigation, methane emission
