title: [Effect of controlled release fertilizer on nitrous oxide emission from paddy field under plastic film mulching cultivation].
abstract: A field experiment was conducted to assess the effect of controlled release fertilizer on N2O emission in paddy field under plastic film mulching cultivation (PM) with water-saving irrigation. Results showed that in the rice growing season, cumulative N2O emissions from the plots applied with urea (PM+U) and with controlled release fertilizer (PM+CRF) were (38.2 +/- 4.4) and (21.5 +/- 5.2) mg N x m(-2), respectively. The N2O emission factors were 0.25% and 0.14% in the treatments PM+U and PM+CRF, respectively. The controlled release fertilizer decreased the total N2O emission by 43.6% compared with urea, of which 49.6% was reduced before the drying period. It also reduced the peak of N2O emission by 52.6%. However, it did not affect soil microbial biomass N and soil NH(4+)-N content at any rice growing stage, and grain yield either. No significant correlation was observed between N2O flux and soil Eh or soil temperature at the depth of 5 cm.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.forename: Shi-Hua
authors.initials: SH
authors.lastname: Lü
authors.forename: Jing
authors.initials: J
authors.lastname: Ma
authors.forename: Hua
authors.initials: H
authors.lastname: Xu
authors.forename: Jiang
authors.initials: J
authors.lastname: Yuan
authors.forename: Yu-Jiao
authors.initials: YJ
authors.lastname: Dong
mesh_terms: D000383:Agriculture / Q000379:methods*; D005308:Fertilizers; D009609:Nitrous Oxide / Q000032:analysis*; D012275:Oryza; D010969:Plastics; D012621:Seasons; D012987:Soil / Q000737:chemistry*; D013696:Temperature; D014508:Urea / Q000737:chemistry; D014867:Water
chemical_list: D005308:Fertilizers; D010969:Plastics; D012987:Soil; D014867:Water; D014508:Urea; D009609:Nitrous Oxide