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营养管理对减少农业区损失的有效性

Brock Kamrath¹, Yongping Yuan¹

¹Office of Research and Development, United States Environmental Protection Agency, Research Triangle Park, North Carolina, USA.

Transactions of the ASABE

|July 12, 2024

概括

营养管理可以减少农场的溶解反应 (DRP) 出口. 过度应用和肥的表面传播增加了淡水中的DRP污染,影响了诸如大湖等生态系统.

科学领域:

环境科学环境科学
农业科学农业科学
水质管理水质管理

背景情况:

从农业用地出口的溶解反应 (DRP) 是淡水污染的主要驱动因素,特别影响了北美大湖等系统.
营养物质管理实践被提出为减轻过度 (P) 释放到水生环境中的关键策略.

研究的目的:

系统地审查和综合有关管理技术及其对美国DPR出口的影响数据.
评估各种营养管理策略在减少农业来源损失方面的有效性.

主要方法:

对2000年至2022年间发表的同行评审文章进行了全面的文献审查,重点关注管理和DRP出口.
在不同的管理场景下,提取和分析了113个图片规模和90个现场规模的有关DRP度和出口事件的观察结果.
基于的应用率,肥料来源 (无机与有机) 和应用方法 (地下与表面) 的DRP度比较.

主要成果:

图片规模研究显示,当应用率低于推水平时,平均DRP度降低了60%.
与降雨模拟期间的表面广播相比,地下肥料的放置显著降低了88%的DRP平均度.
无机和有机肥料,特别是有机肥料的高应用率与极端DRP出口事件的增加有关.

结论:

过度施肥和肥的表面应用对增加DRP出口和淡水污染构成重大风险.
在地表下放置是一种有效的策略,可以减少DRP度在流水中.
进一步的研究至关重要,以充分了解各种营养管理技术对不同规模的损失的影响.

关键词:

4R管理的管理方法农业的下水是农业的下水.保护实践中的保护实践.的出口的出口.

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