关键词: 水稻土, 甲烷, 土壤性质, 土壤水分, 非水稻生长期

Abstract:

Soil organic matter content is the most important property to affect CH ₄ production. There is no specific soil property to affect significantly CH₄ oxidation. The CH₄ production, oxidation and emission potentials are all stimulated by higher soil water content during the previous non rice growing season. Soil water history might be a more important factor than soil property in controlling the spatial variability of CH₄ emissions from rice fields on large spatial scale. The results demonstrate the importance of water management between rice crops as a means to regulate CH₄ production,oxidation and emission during rice growing season.

Key words: paddy soil, methane, soil properties, soil moisture, non-rice growing season