The Mechanisms Driving Ammonia Emission Variations in Alkaline Soil Under Different Irrigation and Fertilization Management Practices in Arid Regions

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Water, Air, & Soil Pollution Pub Date : 2024-11-18 DOI:10.1007/s11270-024-07603-6

Yang Wenzhu, Jia Yongqin, Yu Jianguang, Yang Jie, Gu Peng, Yan Yingchao, Wang Kai, Jiao Yan

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Abstract

The strategy to reduce agricultural ammonia (NH₃) emissions is a focus of attention for governments and scientists around the world. However, the effect of different irrigation and fertilization management practices on NH₃ emission in alkaline soil and the underlining mechanisms are poorly understood. An experiment with drip fertigation (a combination of fertilizing and irrigation), sprinkler fertigation, and traditional furrow irrigation with chemical fertilizer spraying was conducted in potato fields with alkaline soil in arid areas of Northwest China. The objective of this study was to investigate the effect of three irrigation and fertilization management practices on NH₃ emissions using the static box-venting method in a three-year in situ trial. There are significant seasonal difference for NH₃ emission fluxes in alkaline soils under different fertilization and irrigation management practices. The accumulative NH₃ emissions in the alkaline soil from drip fertigation and sprinkler fertigation was 55.93% and 54.05% lower than that from traditional furrow irrigation, respectively. The dynamic changes of NH₄⁺-N and NO₃⁻-N in alkaline soil were the most important factors controlling the differences of NH₃ emissions under different irrigation and fertilization methods. Drip fertigation significantly reduced NH₃ emission intensity in alkaline soil, and were important measures for reducing agricultural NH₃ emissions and ensuring potato yield in alkaline soil farmland in arid regions.

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干旱地区不同灌溉和施肥管理措施下碱性土壤中氨排放变化的驱动机制

减少农业氨（NH3）排放的战略是世界各国政府和科学家关注的焦点。然而，人们对不同灌溉和施肥管理方法对碱性土壤中 NH3 排放的影响及其基本机制知之甚少。在中国西北干旱地区的碱性土壤马铃薯田中进行了滴灌施肥（施肥与灌溉相结合）、喷灌施肥和传统沟灌加化肥喷洒的试验。本研究的目的是在为期三年的原地试验中，采用静态箱式通风法研究三种灌溉和施肥管理方法对 NH3 排放的影响。结果表明，在不同施肥和灌溉管理措施下，碱性土壤中的 NH3 排放通量存在明显的季节性差异。滴灌施肥和喷灌施肥在碱性土壤中的 NH3 累积排放量分别比传统沟灌低 55.93% 和 54.05%。碱性土壤中NH4+-N和NO3--N的动态变化是控制不同灌溉施肥方式下NH3排放量差异的最重要因素。滴灌施肥显著降低了碱性土壤中的NH3排放强度，是干旱地区碱性土壤农田减少农业NH3排放、确保马铃薯产量的重要措施。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.