Abstract Ammonia (NH3) emissions from a range of soil types have been found to differ under laboratory conditions. However, there is lack of studies comparing NH3 emissions from different soil types under field conditions. The objective was to compare NH3 emissions from six different soil types under similar environmental conditions in the field following urea fertiliser application. The study was conducted on a lysimeter unit and NH3 emissions were measured, using wind tunnels, from six different soil types with varying soil characteristics following urea fertiliser application (80 kg N/ha). On average, 17.6% (% total N applied) was volatilised, and there was no significant difference in NH3 emissions across all soil types. Soil variables, including pH, cation exchange capacity and volumetric moisture, were not able to account for the variation in emissions. Further field studies are required to improve the urea-NH3 emission factor used for Ireland’s NH3 inventory.

中文翻译：

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施用尿素肥料后六种爱尔兰土壤类型氨排放的实地比较

摘要 已经发现，在实验室条件下，来自一系列土壤类型的氨 (NH3) 排放量不同。然而，缺乏比较田间条件下不同土壤类型的 NH3 排放的研究。目的是在田间类似环境条件下比较施用尿素肥料后六种不同土壤类型的 NH3 排放。该研究是在蒸渗仪装置上进行的，并使用风洞测量了施用尿素肥料（80 kg N/ha）后具有不同土壤特征的六种不同土壤类型的 NH3 排放量。平均而言，17.6%（施用的总氮的百分比）被挥发，所有土壤类型的 NH3 排放没有显着差异。土壤变量，包括 pH 值、阳离子交换容量和体积水分，无法解释排放量的变化。需要进一步的实地研究来改进用于爱尔兰 NH3 清单的尿素-NH3 排放因子。