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耕作制度对稻田甲烷排放通量有显著影响。水稻———小麦轮作，稻田甲烷平均排放通量为５．３７ｍｇ／ｍ２·ｈ－１，仅是冬水稻田排放通量１６．１０ｍｇ／ｍ２·ｈ－１的１／３。耕作制也影响稻田甲烷排放的季节变化规律。控制稻田甲烷排放的关键在于调节水位
Tillage system has a significant impact on methane fluxes from paddy fields. Rice-wheat rotation, the average methane emission flux was 5.37mg / m2 · h-1, which was only 1/3 of the flux of 16.10mg / m2 · h-1 in winter paddy field. Tillage systems also affect the seasonal variation of methane emissions from paddy fields. The key to controlling methane emissions from paddy fields is regulating water levels