Ren Baizhao, Ma Zhentao, Zhao Bin, Liu Peng, Zhang Jiwang
State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Taian 271018, China.
Plants (Basel). 2022 Jul 30;11(15):1983. doi: 10.3390/plants11151983.
In order to explore the effects of nitrapyrin (N-Serve) application on greenhouse gas emission and nitrogen (N) leaching of a waterlogged maize ( L.) field, we investigated the effects of applying nitrapyrin on soil ammonium (NH-N) and nitrate nitrogen (NO-N) content, nitrous oxide (NO) fluxes, and the warming potential (GWP) in a waterlogged maize field. The design included three treatments: waterlogging treatment with only urea application (V-3WL), waterlogging treatment with urea and nitrapyrin application (V-3WL+N), and no waterlogging treatment applying only urea (CK). Our results revealed that waterlogging led to the increase of nitrate concentrations across the soil profile, thus potentially increasing N leaching and decreasing N use efficiency. The accumulated NO emissions increased significantly in waterlogged plots compared to control plots, and maximum NO emission fluxes occurred during the process of soil drying after waterlogging; this resulted in an increase in GWP and NO greenhouse gas intensity (GHGI) by 299% and 504%, respectively, compared to those of CK. However, nitrapyrin application was able to reduce NO emissions. Nitrapyrin application was also good for decreasing GWP and GHGI by 34% and 50%, respectively, compared to V-3WL. In addition, nitrapyrin application was conducive to reduce N leaching and improve N use efficiency, resulting in a yield increase by 34%, compared to that of V-3WL. The application of nitrapyrin helped to mitigate agriculture-source greenhouse effects and N leaching induced by waterlogging, and was a high N-efficient fertilizer method for a waterlogged field.
为了探究施用硝吡啉（N - Serve）对淹水玉米田温室气体排放和氮（N）淋失的影响，我们研究了在淹水玉米田中施用硝吡啉对土壤铵态氮（NH₄⁺ - N）和硝态氮（NO₃⁻ - N）含量、氧化亚氮（N₂O）通量以及全球增温潜势（GWP）的影响。试验设计包括三个处理：仅施尿素的淹水处理（V - 3WL）、施尿素和硝吡啉的淹水处理（V - 3WL + N）以及不淹水仅施尿素的处理（CK）。我们的结果表明，淹水导致整个土壤剖面硝态氮浓度增加，从而可能增加氮淋失并降低氮利用效率。与对照地块相比，淹水地块的累积N₂O排放量显著增加，且最大N₂O排放通量出现在淹水后土壤干燥过程中；与CK相比，这分别导致GWP和N₂O温室气体强度（GHGI）增加了299%和504%。然而，施用硝吡啉能够减少N₂O排放。与V - 3WL相比，施用硝吡啉还分别使GWP和GHGI降低了34%和50%。此外，施用硝吡啉有利于减少氮淋失并提高氮利用效率，与V - 3WL相比，产量增加了34%。施用硝吡啉有助于减轻农业源温室效应以及淹水引起的氮淋失，是一种适用于淹水田地的高效氮肥施用方法。
