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中文摘要：
培养试验所用15种水稻土样品采自全国各主要稻米产区。15种水稻土产CH4潜力差异很大，厌氧培养CH4产生率显著大于好氧培养，整个培养期（132d）总CH4产生量的变化范围为1．18～1180μg^-1（厌氧培养）和0．41～136μg g^-1（好氧培养）。土壤CH4产生量受与土壤有机质含量有关的有机碳和全氮含量的显著影响，而与活性铁锰含量、颗粒组成、阳离子交换量、土壤pH等其他土壤理化性质之间无显著相关性，表明土壤有机质含量是影响CH4产生的最重要土壤性质。与类似试验的结果比较说明，土壤有机质含量对CH4产生量的影响程度可能与土样代表的空间尺度有关。
英文摘要：
Fifteen paddy soil samples were collected from the major rice producing regions of the country and incubated under anaerobic and aerobic conditions to investigate effects of soil properties on CH4 production. CH4 production potentials of the 15 paddy soils differed greatly, with the total CH4 outputs over the whole incubation period （132 days）varying in the range of 1.18 - 1 180 μg g^-1（anaerobic incubation） and of 0.41 - 136 μg g^-1（aerobic incubation）. Significant positive correlation was observed of CH4 production with contents of soil organic carbon and total nitrogen. However, CH4 production was not significantly affected by the other soil properties, such as particle sizes, soil pH, soil cation exchange capacity and active Fe and Mn contents. Thus soil organic matter content is the most important soil property affecting CH4 production. Comparison with the results of the other similar experiments showed that the larger the spatial scale the soil samples represented, the less soil properties correlated with CH4 production, and the less significant the correction of an individual soil property with CH4 production.
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