土壤2016，Vol.48Issue(2)：248-253,6.DOI:10.13758/j.cnki.tr.2016.02.006
脲胺氮肥对太湖地区稻田氨挥发及氮肥利用率的影响
Effects of Urea-ammonium Mixed Nitrogen Fertilizer on Ammonia Volatilization and Nitrogen Use Efficiency in Paddy Field of Taihu Lake Region
摘要
Abstract
A field plot experiment was conducted in Taihu Lake region to investigate the effects of urea-ammonium mixed nitrogen fertilizer versus an individual form of urea or ammonium chloride on ammonia volatilization (NH3), rice yield and nitrogen use efficiency (NUE) in rice cropping system. Regardless of types of fertilizers, the flux pulse of NH3 volatilization mainly appeared after N fertilizer applications with a duration of 5–7 days, and its value linearly increased with the increasing ammonium concentrations in the surface water of paddy field. Compared to urea or ammonium chloride, urea-ammonium mixed nitrogen fertilizer significantly reduced the NH3emission by 2.71 and 6.41 kg/hm2, respectively (P<0.05). Urea-ammonium mixed nitrogen fertilizer also led to the greater rice yields and higher economic benefit than single application of urea or ammonium chloride. The NUE of urea-ammonium mixed nitrogen fertilizer was increased by 10.43% and 10.64% compared with single application of urea and ammonium chloride, respectively. Taking account of NH3 emission, yield and NUE, the urea-ammonium mixed nitrogen fertilizer should be a promising nitrogen for increasing economic benefits and decreasing the environment risk in Taihu lake region.关键词
脲胺氮肥/氨挥发/水稻产量/氮肥利用率Key words
Urea-ammonium mixed nitrogen fertilizer/Ammonia volatilization/Rice yield/Nitrogen use efficiency分类
农业科技引用本文复制引用
敖玉琴,张维,田玉华,李晓,葛仁山,尹斌,朱兆良..脲胺氮肥对太湖地区稻田氨挥发及氮肥利用率的影响[J].土壤,2016,48(2):248-253,6.基金项目
国家重点基础研究发展计划(973计划)项目(2013CB127401)和环保公益性行业科研专项(201309035)资助。 （973计划）
