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亚热带红壤性稻田的甲烷排放量为５５．２３９／ｍ２·ａ．不同年度间有差异；在年度内（水稻生长季节）亦有差异．以８月排放最多，其余月份依其排放量的顺序是７月，６月，５月，９月，１０月．甲烷排放率的日变化有规律性，１６时前后出现最大值，６时左右出现最小值，呈单峰型，日变化幅度与天气有关，季节变化比较复杂，无规律性，在不同年度、不同稻季（早、晚季），其变化也不一致．稻田甲烷排放与水稻生产和生长密切相关，水稻的种植和生长是稻田甲烷排放的基础和根源．
Methane emissions from subtropical red soil paddy fields were 55.239 / m2 · a. There are differences between different years; there are also differences in the year (rice growing season). In August the largest emissions, the rest of the month according to their emissions in the order of July, June, May, September, October. The diurnal variation of methane emission rate has a regularity. The maximum value appeared before and after 16 o’clock, the minimum value appeared at about 6 o’clock in summer, and the diurnal variation range was related to the weather. The seasonal change was complicated and irregular, and in different years and different Rice season (early and late), its change is inconsistent. Methane emissions from paddy fields are closely related to rice production and growth. Rice cultivation and growth are the basis and source of methane emissions from paddy fields.