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当前位置: 首页 > 文章 > Five-year controlled-release/stable nitrogen fertilization reduced field nitrogen loss without increasing carbon dioxide emissions in a vegetable rotation system 土壤圈(英文版) 2024
Position: Home > Articles > Five-year controlled-release/stable nitrogen fertilization reduced field nitrogen loss without increasing carbon dioxide emissions in a vegetable rotation system Pedosphere 2024

Five-year controlled-release/stable nitrogen fertilization reduced field nitrogen loss without increasing carbon dioxide emissions in a vegetable rotation system

作  者：
Fangli Wang;Zhong Li;Dan Zheng;Shangqiang Liao;Xi Zhang;Zhangbin Yu;Jun Li;Haiying Zong;Xuexia Wang;Ningning Son
关键词：
release;stable;controlled;n fertilization;conventional;8
摘  要：
Controlled-release/stable nitrogen (N) fertilizers can improve vegetable yields and achieve lower greenhouse gas emissions, resulting in cost-effective and environmentally friendly vegetable production. However, there has been limited research on long-term fixed-position rotation vegetable fields. The current study involved a five-year field experiment to examine the effects of long-term controlled-release/stable N fertilization on reducing greenhouse gas emissions and increasing lettuce yield. Six distinct treatments were employed for N fertilization: the control treatment with no N application (T0), conventional N application (T1), 80% of conventional N application (T2), 80% of conventional N applied as urea and stable-compound N fertilizer (T3), 80% of conventional N applied as urea and controlled-release N fertilizer (T4), and 80% of conventional N applied as urea and controlled-release stable-compound N fertilizer (T5). The results showed that the T3, T4, and T5 treatments using controlled-release/stable N fertilization emitted about 12.2%–56.7% and less average annual cumulative nitrous oxide (N2O) and 1.31%–10.0% less carbon dioxide (CO2) than T2. Nitrous oxide and carbon dioxide emissions from T4 and T5 were considerably lower than those from T3. No significant seasonal or interannual variability in those types of emissions was observed, indicating the notable stability of controlled-release/stable N fertilization among different years, with non-significant seasonal variation each year. The observed phenomena were attributed to the fluctuations in soil ammonium and nitrate N content. The study's findings reveal that long-term controlled-release/stable N fertilization resulted in reduced field N loss, which benefits vegetable yields without increasing CO2 emissions, highlighting the application potential of this technique for sustainable agricultural production.

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