冬小麦田氧化亚氮的排放  

Emissions of N2O from Winter-wheat Fields.

作　　者：王少彬[1] 宋文质[1] 苏维瀚[1] 曾汇海 张玉铭[1] 王智平[1] 

机构地区：[1]中国科学院生态环境研究中心,中国科学院石家庄农业现代化研究所

出　　处：《农业环境保护》1994年第5期210-212,共3页Agro-Environmental Protection

摘　　要：对１９９０－１９９２年间冬小麦田氧化亚氮排放的日变化和季节变化进行了研宪，观测了Ｎ＿２Ｏ通量与土壤温度的关系。在整个实验阶段，不施肥田和施肥田Ｎ＿２Ｏ通量的平均值为１０．５μｇＮ／ｍ￣２·ｈ和２２．６μＮ／ｍ．ｈ。小麦地上所施尿素排放Ｎ＿２Ｏ－Ｎ的释放系数为０．０９％。AbstractDiurnal and seasonal variations of N2O emission from winter-wheat fieldswere studied in Northern China from 1990 to 1992.The relationship of N2Oflux and soil temperature was observed.The average of N2O fluxes fromunfertilized and fertilized plots were 10.5μg/m2h and 22.6μg N/m2h, res-pectively,The emission coefficient of urea released as N2O-N from winter-wheat field was 0.09%。

关 键 词：小麦田 排放 一氧化二氮 

分 类 号：X510.2[环境科学与工程—环境工程]