农业环境科学学报2016，Vol.35Issue(10)：2011-2018,8.DOI:10.11654/jaes.2016-0263
不同施肥处理下小麦季潮土氨挥发损失及其影响因素研究
Ammonia volatilization from fluvo-aquic clay soil and its influencing factors during wheat growing season un-der different fertilization
摘要
Abstract
Ammonia(NH3)volatilization is a major path of N losses from applied nitrogen fertilizers, which not only results in economic loss-es, but also poses risks to the environment. A field experiment was set up in Yutian county, Hebei Province, to evaluate the NH3 volatiliza-tion in fluvo-aquic clay soil under applications of different fertilizers. There were four treatments with four replicates per treatment:fresh cow manure+urea(RAW), composted cow manure+urea(COM), NPK fertilizer(NPK), and control with no N fertilizer(CK). The manures and chemical fertilizer were applied at a rate of 225 kg N·hm-2, with half mixed into the soil as basal fertilization before planting and the other half applied to the soil as a top dressing after plant emergence. A continuous air-flow enclosure method was used to monitor NH3 volatilization rates during a winter wheat growing season. The highest cumulative amount of NH3 volatilization during the wheat growing sea-son was measured in the RAW treatment with a net loss through NH3 volatilization of 1.97%of the N applied, which was significantly higher than that in the COM and NPK treatments. Up to 80%of the total NH3 volatilization occurred after top-dressing. Soil temperature was iden-tified as a key factor affecting NH3 volatilization during the basal fertilization period and the flux of NH3 volatilization was significantly cor-related with soil moisture and NH+4-N contents after top-dressing.关键词
冬小麦/新鲜牛粪/堆腐牛粪/氨挥发Key words
winter wheat/fresh cow manure/composted cow manure/ammonia volatilization分类
资源环境引用本文复制引用
肖娇,樊建凌,叶桂萍,刘德燕,阎静,LUO Jia-fa,HOULBROOKE David J,丁维新..不同施肥处理下小麦季潮土氨挥发损失及其影响因素研究[J].农业环境科学学报,2016,35(10):2011-2018,8.基金项目
新西兰恒天然-中国科学院国际合作项目International Collaborative Research on Dairy Farm Waste application to land supported by Fonterra （Beijing）Farm Management Consulting Co. Ltd （）
