Annual dynamics of N2O emissions from a tea field in southern subtropical China
XQ Fu, Y Li, WJ Su, JL Shen, RL Xiao, CL Tong, J Wu
PLANT SOIL AND ENVIRONMENT | CZECH ACADEMY AGRICULTURAL SCIENCES | Published : 2012
The annual dynamics of N2O emissions from a tea field in southern subtropical China was observed in situ weekly in 2010 using a static closed chamber - gas chromatography (GC) method for three treatments: non-fertilised (CK), conventional (CON) and rice straw mulching (SM). The annual N2O emissions for CK, CON and SM were 7.1, 17.2 and 16.7 kg N/ha/year, respectively. The N2O emission factors for the CON and SM treatments were estimated as 2.23% and 1.91% of the total fertiliser N applied, respectively. Rice straw mulching exhibited a potential to reduce the N2O emissions from the tea field, but not statistically significant (P = 0.82). The daily N2O fluxes were positively correlated with th..View full abstract
Awarded by National Basic Research Program of China
Awarded by CAS
Supported by the National Basic Research Program of China, Project No. 2012CB417105 and the CAS Programs (SAFEA International Partnership: KZCX2-YW-T07 and 20100491005-8, Large Grant: KSCX2-EW-B-1-6 and 100-Talents Program).