title: Greenhouse gas emissions from a wheat-maize double cropping system with different nitrogen fertilization regimes.
abstract: Here, we report on a two-years field experiment aimed at the quantification of the emissions of nitrous oxide (N2O) and methane (CH4) from the dominant wheat-maize double cropping system in North China Plain. The experiment had 6 different fertilization strategies, including a control treatment, recommended fertilization, with and without straw and manure applications, and nitrification inhibitor and slow release urea. Application of N fertilizer slightly decreased CH4 uptake by soil. Direct N2O emissions derived from recommended urea application was 0.39% of the annual urea-N input. Both straw and manure had relatively low N2O emissions factors. Slow release urea had a relatively high emission factor. Addition of nitrification inhibitor reduced N2O emission by 55%. We conclude that use of nitrification inhibitors is a promising strategy for N2O mitigation for the intensive wheat-maize double cropping systems.
authors: College of Resources and Environmental Sciences, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China.
authors: Xiao-Kang
authors: XK
authors: Hu
authors: Fang
authors: F
authors: Su
authors: Xiao-Tang
authors: XT
authors: Ju
authors: Bing
authors: B
authors: Gao
authors: Oene
authors: O
authors: Oenema
authors: Peter
authors: P
authors: Christie
authors: Bin-Xiang
authors: BX
authors: Huang
authors: Rong-Feng
authors: RF
authors: Jiang
authors: Fu-Suo
authors: FS
authors: Zhang
mesh_terms: D000383:Agriculture / Q000379:methods*; D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000032:analysis / Q000706:statistics & numerical data; D002681:China; D004784:Environmental Monitoring; D005308:Fertilizers; D017752:Greenhouse Effect; D008697:Methane / Q000032:analysis*; D009585:Nitrogen Dioxide / Q000032:analysis*; D012987:Soil / Q000737:chemistry; D014908:Triticum / Q000254:growth & development*; D003313:Zea mays / Q000254:growth & development*
chemical_list: D000393:Air Pollutants; D005308:Fertilizers; D012987:Soil; D008697:Methane; D009585:Nitrogen Dioxide