Plastic film mulching (PFM) as an agronomic practice was rapidly expanded to improve crop yield and quality, mainly due to improving soil water and temperature condition. PFM has been known to increase greenhouse gas (GHG) emissions, but its influence on ammonia (NH₃) volatilization loss was not properly studied. To determine the impact of PFM on NH₃ emission loss, PFM and no-mulching were designed as the main treatment. In addition, chemical (NPK) and organic fertilization plots as the sub-treatment were placed under the same mulching condition. In the NPK, the recommendation level (N-P₂O₅-K₂O=186–35–74 kg ha^-1) of chemical fertilizers was only applied for maize cultivation. In the organic fertilization, the mixture of barley and hairy vetch was cultivated during the fallow season and its whole biomass as green manure was incorporated for maize cultivation. PFM considerably improved average soil water and temperature regimes during cropping season by 0.02–0.05 m³ m^-3 and 0.8–1.4 ℃ over no-mulching, respectively. These improved soil properties enhanced maize grain yield by around 95–270 and 80–300% in NPK and organic fertilization plots over no-mulching, respectively. The emission loss of NH₃ gas which is highly water-soluble was 70–215% higher in NPK than organic fertilization under the same mulching. However, PFM significantly decreased seasonal NH₃ emission loss by approximately 40–45% over no-mulching, probably due to physical trapping in water drops under the plastic film. To verify the suppression mechanism of NH₃ emission loss by PFM, the emission rates of nitrous oxide (N₂O) which is a water-insoluble gas were simultaneously monitored using the closed chamber method. Different from NH₃ emission loss, PFM slightly increased N₂O emission without a statistical difference, regardless of fertilization background. In conclusion, PFM could be a very useful cropping practice to decrease NH₃ emission loss, as well as improve soil properties and crop productivity.

塑料薄膜覆盖（PFM）作为一种农艺实践迅速扩大，以提高作物产量和质量，主要是由于改善了土壤水分和温度条件。众所周知，PFM 会增加温室气体 (GHG) 的排放，但其对氨 (NH ₃ ) 挥发损失的影响并未得到适当研究。为了确定 PFM 对 NH ₃排放损失的影响，设计了 PFM 和免覆盖作为主要处理。此外，将作为子处理的化学（NPK）和有机肥地块置于相同的覆盖条件下。在 NPK 中，推荐水平（NP ₂ O ₅ -K ₂ O=186–35–74 kg ha ^-1) 的化肥仅用于玉米种植。在有机施肥中，大麦和紫云英的混合物在休耕季节进行种植，并将其全部生物量作为绿肥用于玉米种植。与不覆盖相比， PFM 显着改善了种植季节的平均土壤水分和温度状况，分别提高了 0.02-0.05 m ³ m ^-3和 0.8-1.4 ℃。这些改良的土壤特性使 NPK 和有机施肥地块的玉米产量在不覆盖的情况下分别提高了约 95-270% 和 80-300%。氮磷钾高水溶性NH ₃气体的排放损失在相同覆盖下比有机肥高70-215%。然而，PFM 显着降低了季节性 NH ₃与不覆盖相比，排放损失约 40-45%，可能是由于塑料薄膜下的水滴中的物理捕获。_{为验证PFM对NH 3}排放损失的抑制机制，采用密闭室法同时监测不溶于水的气体一氧化二氮(N _{2 O)的排放速率。}与 NH ₃排放损失不同，无论施肥背景如何，PFM 都会略微增加 N ₂ O 排放，但没有统计学差异。总之，PFM 可能是一种非常有用的种植方式，可减少 NH ₃排放损失，并改善土壤性质和作物生产力。