为了揭示覆膜滴灌对稻田CH4综合排放的影响，采用比较分析法分析了覆膜滴管条件下稻田甲烷的排放变化。试验采用覆膜滴灌Ⅰ、覆膜滴灌Ⅱ和漫灌3个处理，分别对当地高产主栽品种吉旱1号进行CH4排放通量的测定。结果表明，覆膜滴灌稻田CH4排放通量显著高于漫灌稻田；覆膜滴灌处理条件下，土壤含水率高的覆膜滴灌Ⅰ稻田CH4排放通量高于覆膜滴灌Ⅱ，说明土壤水分是稻田CH4排放的主要影响因素之一；3个处理下CH4的排放趋势大体一致，排放高峰均出现在水稻分蘖的前中期和拔节孕穗期，说明覆膜滴灌未改变稻田CH4排放的进程。
To reveal CH4 emissions in rice fields under covered film drip irrigation, the comparative method was used to study the methane emission of rice paddy with drip irrigation under mulch film. Experiments were divided into three treatments: drip I, drip II and flooding. The local high-yielding cultivars Jihan 1 was used to analysis the methane emissions from rice paddy. The results showed that methane emission flux from rice fields under covered film drip irrigation was less than flooded conditions; methane emission flux in drip Ⅰ was higher than that of drip Ⅱ, which indicated that the soil moisture content is one of the major factors which affect CH4 emission; methane emissions trend under three conditions were roughly the same, and the emission peaks were in mid tillering stage and jointing booting stage, which indicated that the process of CH4 emission from paddy field under film drip irrigation was not changed.
[1] 上官周平，邵明安. 21世纪农业高效用水技术展望[J]. 农业工程学报，1999，15（1）：17-21.
[2] IPCC-Intergovernmental panel on climate change. Climate change 1995. In: The Science of Climate Change[C]. Cambridge （UK）: Cambridge University Press, 1996: 572.
[3] Bouwman A W. Introduction. In: Bouwman，A.W.（Ed.）, Soils and the Greenhouse Effect [M]. Wiley, Chicester. 1990: 25-32.
[4] Rodhe H A. Comparision of the contribution of various gases to the greenhouse effect [J]. Science, 1999, 248: 1 217-1 219.
[5] 彭世彰，杨士红，徐俊增. 控制灌溉对稻田CH4和N2O综合排放及温室效应的影响[J]. 水科学进展，2010，21（2）:235-240.
[6] 黑瑞，田军仓，马波. 膜下滴灌旱作水稻甲烷的排放研究[J]. 灌溉排水学报，2015，34（4）：67-69.
[7] 江长胜，王跃思，郑循华，等. 稻田甲烷排放影响因素及其研究进展[J]. 土壤学报，2004，35（5）：663-669.
[8] Wang M X, Shangguan X J, Shen R X, et al. Methane production，emission and possible control measures in the rice agriculture [J]. Adv Atmospheric Sci, 1993, 10（30）: 307-314.
[9] 彭世彰，李道西，缴锡云，等. 节水灌溉模式下稻田CH4排放的季节变化[J]. 浙江大学学报：农业与生命科学版，2006，32（5）：546-550.
[10] 彭世彰，和玉璞，杨士红，等. 控制灌溉稻田的甲烷减排效果[J]. 农业工程学报，2013，29（8）：100-107.
[11] 彭世彰，李道西，徐俊增，等. 节水灌溉模式对稻田CH4排放规律的影响[J]. 环境科学，2007，28 （1）：9-13.
