Abstract Previous studies regarding environmental impacts of nitrification inhibitors (NIs) in intensive vegetable production systems mainly focused on the fate of individual nitrogen (N) compounds. Due to the influence of various N-dynamic pathways on one another, systematic observations, taking into account all key component processes, must be carried out to achieve practically useful recommendations. As well, the mechanisms of how NI application leads to increasing vegetable yields are not well understood. Therefore, we conducted a field experiment with three leading vegetable crops (lettuce, celery, and tomato), and two urea N input rates, without (N1, N2) or with a nitrification inhibitor, 2-chloro-6-(trichloromethyl)-pyridine (CP) (N1 + CP, N2 + CP), to evaluate the comprehensive effects of CP on reactive-N emission in these intensive vegetable production systems, with a focus on leaching, ammonia (NH3) volatilization, and nitrous oxide (N2O) emission, and to clarify the possible mechanisms by which CP affects vegetable yield. The results show that CP application significantly decreased (p

中文翻译：

---

综合评价应用硝化抑制剂对集约化蔬菜生产系统活性氮损失的影响

摘要 先前关于集约化蔬菜生产系统中硝化抑制剂 (NI) 对环境影响的研究主要集中在单个氮 (N) 化合物的归宿上。由于各种 N 动态路径相互影响，必须进行系统观察，考虑到所有关键组成过程，以获得实用的建议。同样，NI 应用如何导致蔬菜产量增加的机制尚不清楚。因此，我们对三种主要蔬菜作物（生菜、芹菜和番茄）和两种尿素氮输入率进行了田间试验，不加 (N1, N2) 或加硝化抑制剂 2-chloro-6-(trichloromethyl)-吡啶 (CP) (N1 + CP, N2 + CP), 评估 CP 对这些集约化蔬菜生产系统中活性氮排放的综合影响，重点是浸出、氨 (NH3) 挥发和一氧化二氮 (N2O) 排放，并阐明 CP 影响蔬菜的可能机制屈服。结果表明，CP应用显着减少（p