摘要
以山东省桓台县高产农田为试验对象,分析在高产条件下,不同秸秆还田模式和氮肥施用量对农田CO2排放的影响。结果表明,氮肥施用量与秸秆还田模式都是影响土壤CO2排放的重要因素,玉米秸秆和小麦秸秆全部还田的处理土壤CO2排放通量高于其它中低氮处理,而小麦秸秆还田与不还田的各处理间差别不大。麦秸还田配施高氮处理的CO2排放通量普遍高于其它处理。
Huantai County was famous for its crop straw retum and high fertilizer input. The experiment was carried out for studying the effect of straw - return and nitrogen application on the CO2 emission in high - yield - farmland. The resuits indicated that different straw return and nitrogen application were two important factors to effect the CO2 emissions of soil. The CO2 emission of wheat - and - maize - straw - return treatment was higher than all of the other treatments and wheat - straw- return plus high level N fertilizer application showed the same result.
出处
《土壤肥料》
CSCD
北大核心
2006年第1期14-16,65,共4页
Soils and Fertilizers
基金
国家自然科学基金重点项目"基于农田生态系统碳氮平衡的环境成本评估模型"
"十五"国家科技攻关重大专项"区域生态农业技术规范与保障体系研究"(2002BA516A)资助
关键词
高产农田
秸秆还田
氮肥
CO2排放
high- yield -farmland, straw -return, nitrogen fertilizer, CO2 emission
