Large quantities of mineral phosphorus (P) fertilizer are often applied to intensively cultivated organic soils. Although erosion and runoff can contribute to loss of P, the large amount of fertilizer applied causes a rapid build-up of this nutrient, resulting in the downward movement of excess P in the soil profile and subsequent loss through tile drainage water. For arable organic soils, these losses often occur through subsurface tile drains, a common requirement to maintain a favorable air–water balance in the crop root zone, as well as to prevent soil subsidence. As such, subsurface drainage is a major pathway for agricultural P loss, contributing to persistent eutrophication of rivers, lakes, and estuaries globally. Although studies have been conducted on P mitigation within organic soils, application of drainage water management (DWM) as a P mitigation strategy in these soils, has not been extensively studied. The objective of this paper is to address this gap in knowledge by reviewing previous studies on P losses from subsurface drained agricultural organic soils while evaluating potential mitigation strategies. Specifically, this paper assesses the unique properties of organic soils that could influence P fate and transport, such as the distribution of P pools within the soil pools; variable pore geometry, hydrophobicity, and shrinkage; P loads exiting tile drains; and DWM practices in mitigating P losses. It is concluded that P retention is affected by the dynamic nature of soil water movement in organic soils and that substantial P loads enter surrounding water bodies via subsurface drainage effluent. There is evidence that DWM is an effective best management practice in the abatement of subsurface P losses.

大量矿物磷（P）肥料通常用于精耕细作的有机土壤。尽管侵蚀和径流会导致磷的损失，但是大量施用的肥料会导致这种养分的快速积累，从而导致土壤剖面中过量的磷向下移动，并随后通过瓷砖排水而损失。对于可耕种的有机土壤，这些损失通常是通过地下瓷砖排水沟发生的，这是维持作物根部区域良好的水-水平衡以及防止土壤沉降的普遍要求。因此，地下排水是农业磷流失的主要途径，导致全球河流，湖泊和河口持续富营养化。尽管已经进行了有机土壤中磷的缓解研究，在这些土壤中，将排水管理（DWM）作为P缓解策略的应用尚未得到广泛研究。本文的目的是通过回顾先前对地下排水农业有机土壤中磷损失的研究，同时评估潜在的缓解策略来解决这一知识差距。具体而言，本文评估了可能影响P命运和运移的有机土壤的独特特性，例如P池在土壤池中的分布；可变的孔几何形状，疏水性和收缩率；从瓷砖排水口流出的P负载；和DWM减轻P损失的实践。可以得出结论，有机土壤中磷的保留受到土壤水运动的动态特性的影响，大量的P负荷通过地下排水流出到周围的水体中。