Phosphorus transformation and transport from fertilizers and manures

化肥和粪肥中磷的转化和运输

• 批准号: RGPIN-2016-05885
• 负责人: Akinremi, Olalekan
• 金额: $ 1.75万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=634236
• 关键词: Phosphorus; transformation; transport; fertilizers; manures

Phosphorus (P) is an essential element for all forms of life including agricultural crops.The soil supply of P is augmented by fertilizer addition to ensure economic yield. However, the fertilizer use efficiency of P by agricultural crops rarely exceeds 20% in the year of application. Increasing the efficiency of fertilizer P by manipulating the chemistry of the fertilizer band will produce both agronomic and environmental benefits. This is through a reduction in P fertilizer and residual soil P thereby reducing the risk of P loss to surface waters. For example, in 2013, Lake Winnipeg, the 10

磷是包括农作物在内的所有生命形式所必需的元素。土壤中磷的供应通过添加肥料来增加，以确保经济产量。然而，在施磷当年，农作物对磷的肥料利用率很少超过20%。通过控制肥料带的化学成分来提高肥料磷的效率，将产生农艺效益和环境效益。这是通过减少磷肥和土壤残留磷，从而减少磷向地表水流失的风险。例如，2013年，温尼伯湖，10个