Effectiveness of Nutrient Management for Reducing Phosphorus Losses from Agricultural Areas.

IF 1.4 4区 农林科学 Q3 AGRICULTURAL ENGINEERING Transactions of the ASABE Pub Date : 2023-01-01 DOI:10.13031/jnrae.15572
Brock Kamrath, Yongping Yuan
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Abstract

Dissolved reactive phosphorus (DRP) export from agricultural areas is a leading cause of nutrient pollution in freshwater systems (e.g., the North American Great Lakes). A potential solution to mitigate the excessive release of DRP is the use of nutrient management. To evaluate the effectiveness of nutrient management for phosphorus (P) in the United States, we conducted a review to synthesize P management and DRP export data from peer-reviewed articles published between 2000 to 2022. We identified 15 publications and extracted 113 and 90 observations from plot- and field-scale studies, respectively. At the plot scale, mean DRP concentrations were approximately 60% lower when P application rates were below the maximum recommended rate. In addition to the lower mean value, more extreme DRP export events occurred when the P fertilization rate was greater than the maximum recommended rate. In terms of application method, subsurface placement reduced mean DRP concentrations during rainfall simulations by 88% relative to surface placement (i.e., broadcasting). For fertilizer sources, mean DRP concentrations were similar between inorganic and organic fertilizers. However, at high application rates, organic fertilizers had a greater potential to produce extreme DRP export events. At the field-scale, organic fertilizers applied at high rates had the potential to produce extreme DRP export events. However, field-scale results for the other nutrient management techniques were generally inconclusive due to a limited number of studies and confounding factors. Overall, these results displayed the potential adverse impacts of overfertilization and the surface application of P fertilizers and highlighted the need for further research into the influence of nutrient management on P losses.

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养分管理对减少农业区磷流失的效果。
从农业区输出的溶解性活性磷(DRP)是淡水系统(如北美五大湖)营养污染的主要原因。养分管理是缓解 DRP 过度释放的一个潜在解决方案。为了评估美国磷(P)营养管理的有效性,我们对 2000 年至 2022 年间发表的同行评审文章中的磷管理和 DRP 排放数据进行了综述。我们确定了 15 篇出版物,并分别从小区和田间尺度的研究中提取了 113 条和 90 条观测数据。在小区尺度上,当钾施用量低于最大推荐施用量时,DRP 的平均浓度约降低 60%。除了平均值较低之外,当钾肥施用量高于建议的最大施用量时,还出现了更极端的 DRP 输出事件。就施肥方法而言,在模拟降雨过程中,地表下施肥比地表施肥(即播种)降低了 88% 的 DRP 平均浓度。在肥料来源方面,无机肥料和有机肥料的 DRP 平均浓度相似。然而,在高施肥量的情况下,有机肥更有可能产生极端的 DRP 输出事件。在田间尺度上,高施肥量的有机肥有可能产生极端的 DRP 输出事件。然而,由于研究数量有限和混杂因素的影响,其他养分管理技术的田间规模结果一般没有定论。总之,这些结果显示了过度施肥和地表施用钾肥的潜在不利影响,并强调有必要进一步研究养分管理对钾损失的影响。
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来源期刊
Transactions of the ASABE
Transactions of the ASABE AGRICULTURAL ENGINEERING-
CiteScore
2.30
自引率
0.00%
发文量
0
审稿时长
6 months
期刊介绍: This peer-reviewed journal publishes research that advances the engineering of agricultural, food, and biological systems. Submissions must include original data, analysis or design, or synthesis of existing information; research information for the improvement of education, design, construction, or manufacturing practice; or significant and convincing evidence that confirms and strengthens the findings of others or that revises ideas or challenges accepted theory.
期刊最新文献
Effectiveness of Nutrient Management for Reducing Phosphorus Losses from Agricultural Areas. Effectiveness of Nutrient Management on Water Quality Improvement: A Synthesis on Nitrate-Nitrogen Loss from Subsurface Drainage. Comparison of Droplet Size, Coverage, and Drift Potential from UAV Application Methods and Ground Application Methods on Row Crops. Effectiveness of Conservation Crop Rotation for Water Pollutant Reduction from Agricultural Areas. Experimental Study on Critical Shear Stress of Cohesive Soils and Soil Mixtures
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