采用静态箱-气相色谱法对长期施肥下南方黄泥稻田甲烷排放进行观测。结果表明：不同施肥条件下各处理稻田甲烷排放均呈先上升后下降的变化趋势，其中排放峰值出现在水稻分蘖期。施肥促进稻田甲烷排放，与对照不施肥相比，施肥处理的甲烷季节累积排放增加22.3~74.2 kg/hm2，增幅达17.4%~58.0%，其中化肥＋有机肥处理显著高于单施化肥NPK，但NPKM、NPKS处理间差异不显著。与不施肥相比，施肥处理对温室效应的贡献达1.18~1.58倍。%By using the method of static chamber-gas chromatography, CH4 emission from yellow-mud ifeld under long-term fertilization in southern China was observed. The results showed that CH4 emission from paddyfield under different fertilization conditions all represented the same variation trend that increasing at the beginning and declining later on, and the emission peak appeared in the rice tillering stage; the fertilization promoted CH4 emission from paddyifeld, in comparison with CK, seasonal CH4 cumulative emission under fertilization treatments increased by 22.3~74.2 kg/hm2 with the increasing range of 17.4%~58.0%, among all of the fertilization treatments, the CH4 emission from paddyifeld under treatment of chemical fertilizer + organic fertilizer was signiifcantly higher than single application of N, P and K, but the difference between NPKM treatment and NPKS treatment was not obvious; compared with no fertilization, the contribution of fertilization treatments to greenhouse effect reached 1.18~1.58 times.
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