Table 5.

Nitrogen type, water regime and pH class specific N₂O emission factors (EF) for rice (transformed data).

	EF (% of applied N)
N type	AB	AS		Mix	Urea
Water regime	IS	IS		UN	CF		IM	IS			UN
pH class	N	N	L	N	H	N	N	H	N	L	H	N
AM	0.79	0.12	0.16	1.77	0.15	0.03	0.63	0.18	0.27	0.11	0.13	0.52
GMcorr	0.82	0.13	0.28	1.79	0.16	0.03	0.72	0.22	0.31	0.13	0.14	0.53

Abbreviation: nitrogen type – AB: ammonium bicarbonate; AS: ammonium sulphate; mix: compound fertilizer. Water regime – IM: intermittent irrigation; IS: intermittent saturation of soil; CF: continuous flooding; UN: unknown. pH class – H: high acid; N: neutral; L: low acid.