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首页> 外文期刊>Archives of Agronomy and Soil Science >Nitrous oxide emission, global warming potential, and denitrifier abundances as affected by long-term fertilization on Mollisols of Northeastern China
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Nitrous oxide emission, global warming potential, and denitrifier abundances as affected by long-term fertilization on Mollisols of Northeastern China

机译：氧化二氮氧化物排放，全球变暖潜力和反硝基丰度受到中国东北部苗族的长期施肥的影响

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摘要

A long-term field experiment was performed to assess the effects of fertilization regimes on greenhouse gas emissions, soil properties, soil denitrifies, and maize (Zea mays) grain yield on Mollisols of Northeastern China. Chemical nitrogen (N), phosphorus (P), and potassium (K) fertilizers plus pig manure (MNPK) treatment significantly increased soil N2O emissions by 29.9-226.4% and global warming potential (GWP) by 29.8-230.7% compared to unfertilized control (CK), chemical N fertilizer only (N), chemical N, P, and K fertilizers (NPK) and chemical N, P, and K fertilizers plus corn straw (SNPK) treatments. However, the MNPK treatment yielded similar greenhouse gas intensity (GHGI) as compared with other treatments, mainly due to higher maize grain yield. There were also higher gene copy numbers of nirK, nirS, and nosZ in topsoil (0-20 cm depth) under MNPK treatment. Automatic linear modeling analysis indicated that main factors influencing soil N2O emissions were soil organic carbon (SOC), NO3- content, and nirK gene abundance. Although the application of chemical fertilizers plus organic manure increases N2O emissions due to higher N and C availability and nirK gene activity in the soil, this is still a promising fertilizer management due to its notable enhancement of maize grain yield and SOC content.
机译：进行了长期的现场实验，以评估施肥制度对温室气体排放，土壤性质，土壤脱氮，玉米（ZEA 5月）粮食产量对中国东北部苗族的影响。化学氮（N），磷（P）和钾（K）肥料加上猪粪（MNPK）治疗明显增加了29.9-226.4％和全球变暖潜力（GWP）与未受精控制相比，将土壤N26.4％和全球变暖潜力（GWP）显着增加（CK），化学肥酸肥仅（n），化学N，P和K肥料（NPK）和化学N，P和K肥料加玉米秸秆（SNPK）治疗。然而，与其他治疗相比，MNPK治疗得到了类似的温室气体强度（GHGi），主要是由于玉米籽粒产量更高。在MNPK治疗下，在Topsoil（0-20cm深度）中还有更高的Gene拷贝数量的NIRK，NIR和NOSZ。自动线性建模分析表明，影响土壤N2O排放的主要因素是土壤有机碳（SoC），No3含量和尿路基因丰富。虽然化学肥料加上有机肥料的应用增加了由于土壤中的N和C可用性和NIRK基因活性而增加了N2O排放，但由于其显着提高玉米籽粒产量和SOC含量，这仍然是一个有前景的肥料管理。

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