• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Scientific Reports >Measurement and mitigation of nitrous oxide emissions from a high nitrogen input vegetable system
【2h】

Measurement and mitigation of nitrous oxide emissions from a high nitrogen input vegetable system

机译：高氮输入蔬菜系统中一氧化二氮排放的测量和缓解

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The emission and mitigation of nitrous oxide (N2O) from high nitrogen (N) vegetable systems is not well understood. Nitrification inhibitors are widely used to decrease N2O emissions in many cropping systems. However, most N2O flux measurements and inhibitor impacts have been made with small chambers and have not been investigated at a paddock-scale using micrometeorological techniques. We quantified N2O fluxes over a four ha celery paddock using open-path Fourier Transform Infrared spectroscopy in conjunction with a backward Lagrangian stochastic model, in addition to using a closed chamber technique. The celery crop was grown on a sandy soil in southern Victoria, Australia. The emission of N2O was measured following the application of chicken manure and N fertilizer with and without the application of a nitrification inhibitor 3, 4-dimethyl pyrazole phosphate (DMPP). The two techniques consistently demonstrated that DMPP application reduced N2O emission by 37–44%, even though the N2O fluxes measured by a micrometeorological technique were more than 10 times higher than the small chamber measurements. The results suggest that nitrification inhibitors have the potential to mitigate N2O emission from intensive vegetable production systems, and that the national soil N2O emission inventory assessments and modelling predictions may vary with gas measurement techniques.
机译：高氮（N）蔬菜系统中一氧化二氮（N2O）的排放和缓解尚不十分清楚。硝化抑制剂被广泛用于减少许多种植系统中的N2O排放。但是，大多数N2O通量的测量和抑制剂的影响都是在小型反应室中进行的，尚未使用微气象技术在围场范围内进行研究。除了使用密闭室技术之外，我们还使用开放路径傅里叶变换红外光谱技术结合反向拉格朗日随机模型对一个4公顷芹菜场上的N2O通量进行了量化。芹菜作物生长在澳大利亚维多利亚州南部的沙质土壤上。在有和没有硝化抑制剂3，4-二甲基吡唑磷酸酯（DMPP）的情况下，在施用鸡粪和氮肥后测量N2O的排放。两种技术一致地表明，即使通过微气象技术测量的N2O通量比小室测量的高出10倍以上，使用DMPP仍可减少37-44％的N2O排放。结果表明，硝化抑制剂具有减轻集约化蔬菜生产系统中N2O排放的潜力，并且全国土壤N2O排放清单评估和模型预测可能会因气体测量技术而异。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号