【摘要】 农田土壤是温室气体N₂O产生和排放的主要源头之一,研究农田土壤N₂O排放的主要影响因素,对于减少N₂O产生和排放具有重要意义。根据文献研究对农田土壤N₂O的排放机理和影响因素进行了综述,重点从土壤理化性状和耕作管理两大方面阐述了其对农田土壤N₂O排放的影响。结果表明,在农业生产过程中减少农田N₂O排放需要根据不同的土壤理化性状进行相应合理的耕作管理,尤其是在水分和施肥环节的调控上影响较为突出。同时,就目前有争议的问题指出了其可能原因。更多还原

【Abstract】 Cropland soil is one of the major sources of greenhouse gas N2 O generation and emission, and it is of important significance for reducing the generation and emission of N2 O to study on the main influence factors of N2 O emissions from cropland soil. Based on a large number of literatures, this paper has reviewed the mechanism and the influencing factors of the N2 O emissions, particularly on soil physicochemical characters and cultivation management; found that reducing agricultural N2 O emissions needs the corresponding reasonable tillage management in the process of agricultural production based on different soil physicochemical properties, especially the regulation of the effects of water and fertilizer application; and pointed out that some related controversial problems with probable cause would be solved in research progress.更多还原