As a major source of N₂O emissions, cropland has been researched more, with precipitation and fertilization being considered as the natural and anthropogenic key factors that affecting N₂O emissions in wheat fields, respectively. Given the low sampling frequency, most previous studies using the static chamber method may underestimate N₂O emissions. Meanwhile, the potential interaction effect of precipitation and fertilization on cropland N₂O emissions have been neglected. In this study, we reported the dynamics of N₂O emissions and investigated the effects of precipitation and fertilization on N₂O emission from wheat fields at different time scales based on the eddy covariance observation. Meanwhile, the Boosted Regression Trees method was adopted to quantify the precipitation and fertilization-related factors. The results showed that there were no obvious seasonal and diurnal variation patterns of N₂O flux in wheat fields. The average daily N₂O emission was N₂O-N 666.5±669.4 μg/(m²?d) in this study, which was mainly released as a pulse. The ratios of precipitation and fertilization-induced pulses to total N₂O emissions in wheat fields were 29.4% and 19.2%, respectively. Precipitation increased N₂O emissions, and which responded rapidly to the precipitation events (mainly within a few hours after the precipitation). Meanwhile, the precipitation promotion could last 1–2 days. Fertilization also increased N₂O emissions, but existed a one-week lag. Considering the interactive effects of precipitation and fertilization, precipitation events occurring within 1–8 days after fertilization significantly promoted the emission of N₂O. Therefore, the interaction of precipitation and fertilization should not be neglected.