不同离子对水稻田土壤甲烷氧化活性影响的研究

Effect of mineral nutrition ions on the activity of methane oxidation in paddy soil

摘要: 研究了矿质元素不同的阴离子和阳离子与黄松泥田水稻土壤氧化甲烷活性之间的相关性。结果表明 ,不同的阴离子和阳离子对甲烷氧化活性的影响有显著性差异 ,不同浓度的同一种阴离子或阳离子对甲烷氧化活性的影响也有显著性差异。Na+较K+对土壤甲烷氧化活性具有更强的抑制作用。NH4+和NO2-可与甲烷氧化竞争土壤中的分子氧而有明显的抑制作用。Cr3+对微生物具毒性而影响土壤的甲烷氧化。阴离子PO43-和CO32-无明显影响。这种影响的差异性不仅与阴离子和阳离子本身的理化特征有关 ,而且与土壤对阳离子的吸附力及阴离子与土壤的相互作用强度有关。土壤理化特性同样影响阴离子和阳离子对甲烷氧化活性影响的强弱

Abstract: The effect of cations and anions in mineral nutrition compounds on methane oxidizing activity was studied in Marine fluvigenic yellow loamy paddy soil The results indicated that there were significantly different effects of various cations and anions at different concentrations on methane oxidizing activity in paddy soil Na+ had a stronger inhibition than K+ to methane oxidation in paddy soil NH4+ and NO2- could obviously decrease the methane oxidation for competition of limited O2 in soil Cr3+ had the bio toxicity to microorganisms, leading to the decline of methane oxidizing activity PO43- and CO32- had no notable effect on methane oxidation