Ammonium and Nitrate as Nitrogen Sources for Plant Growth

铵和硝酸盐作为植物生长的氮源

• 批准号: 8916637
• 负责人: Arnold Bloom
• 金额: $ 22.5万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-04-15 至 1994-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8916637&HistoricalAwards=false
• 关键词: Ammonium; Nitrate; Nitrogen; Sources; Plant

Nitrogen is the mineral element that plants require in greatest amounts and whose availability often limits growth in agricultural or natural systems. Plants obtain nitrogen predominantly in the form of ammonium or nitrate ions. Although the absorption of ammonium and nitrate from the soil and assimilation of these ions into organic compounds should theoretically be among the most energy-intensive processes in life, no direct measurements of the energy costs associated with these processes have been made. The proposed research would use newly developed plant material and instrumentation to assess these energy costs. The results of this research should improve the energy efficiency of fertilizer applications.

氮是植物需要量最大的矿物元素，其可用性常常限制农业或自然系统的生长。 植物主要以铵或硝酸根离子的形式获得氮。 尽管从土壤中吸收铵和硝酸盐以及将这些离子同化为有机化合物理论上应该是生命中最耗能的过程之一，但尚未对与这些过程相关的能量成本进行直接测量。 拟议的研究将使用新开发的植物材料和仪器来评估这些能源成本。 这项研究的结果应该可以提高肥料施用的能源效率。