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采用计算机控制的全自动气相色谱监测系统，对中稻田4个处理进行了130个日夜的甲烷排放量的监测，各处理中以无机肥＋绿肥＋长期淹灌处理的甲烷排放通量最高，为464．0mg／m2·d，最低的为无机肥＋绿肥＋间歇灌溉处理，只有180．5mg／m2·d。水稻生长前半期是甲烷排放高峰期，除长期淹灌的处理外，其它处理在移栽后65d的排放量约占总排放量的77％～93％。甲烷排放量与气温呈正相关。搁田可明显减少甲烷的排放量。
Using computer-controlled automatic gas chromatography monitoring system, 130 day-and-night methane emission monitoring was carried out for 4 treatments in medium-paddy field. The highest methane emission flux was obtained by inorganic fertilizer + green manure plus long-term irrigation 464.0mg / m2 · d, the lowest for inorganic fertilizer + green manure + intermittent irrigation, only 180.5mg / m2 · d. The first half of rice growth is the peak period of methane emission. Except for long-term flooding irrigation, the emissions of other treatments accounted for about 77% -93% of the total emissions at 65 days after transplanting. Methane emissions and temperature were positively correlated. Tin can significantly reduce methane emissions.