N₂O Emissions from an Apple Orchard in the Coastal Area of Bohai Bay, China

Table 3

Annual cumulative emissions of N₂O (mean ± SE, kg N₂O–N ha⁻¹).

N treatment	Site A	Site B	Weighted average
SN	63.9±13.7	36.7±3.1	44.3±6.0
CK	36.1±1.9	34.1±3.4	34.6±3.0

The meanings of SN, CK, site A, and site B can be found in the text and the footnote in Table 2. The weighted averages were calculated from the emissions of site A and site B according to their area ratio.