施用有机肥对农田温室气体排放影响研究进展

有机肥因具有丰富的氮、磷、钾、生物活性物质,能改善地力及作物品质等优点,而被广泛运用。然而有机肥对农田土壤的作用机理复杂,对农田土壤温室气体的影响不容忽视。通过增加土壤中有机C、改变土壤的C/N、影响土壤呼吸速率、增强土壤微生物活性等途径影响农田土壤温室气体的排放量。本文结合当前国内外研究进展,综述了施用有机肥对农田温室气体排放影响因子及作用特征,并提出了今后重点研究方向,以期为更好地揭示有机肥对农田温室气体通量的作用机制和控制农田温室气体排放提供参考。

Research advances on effect of organic fertilizer on farmland greenhouse gas emissions

Organic fertilizer is widely used because it carrys a full range of nutrients and is rich in biologically active substances and helpful for improving soil fertility and crop quality.However,the mechanism of organic fertilizer on farmland soil is complex.And the impact on agricultural soils in greenhouse gases can not be ignored.It affects agricultural soil emissions of greenhouse gases by increasing soil organic C,changing the soil C/N and soil respiration rate,and increasing microbial activity.Combined domestic and abroad research progress,the paper briefly described the effect factors and characteristics of organic fertilizer on farmland greenhouse gas emissions.The key research direction of the field in the future was proposed in order to reveal the mechanism of organic fertilizer on greenhouse gas fluxes,and provide a reference control greenhouse gas emissions.