生物炭和羊粪对大麦根系构型、铅、铜、锌吸收、转运及植物修复效率的影响

IF 3.4 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Taoufik El Rasafi, Abdallah Oukkaroum, Abdelmajid Haddioui
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引用次数: 0

摘要

矿山土壤由于在植物各部位的迁移和积累,对植物生长造成严重影响,在世界范围内被认为是严重的金属污染源。结果表明,与污染土壤相比,生物炭和肥料改善了大麦根系形态。此外,Pb和Cu在茎部的迁移量较大。有机肥10%和20%处理增加了根中Pb的积累量,而有机肥20%和生物炭2.5%处理增加了根中Pb的积累量。施用10%、20%和2.5%的生物炭促进了锌在根系中的积累(生物积累因子:BAFroot≥1)。根据Dickson品质指数和耐受性指数,大麦对土壤中金属具有较高的耐受性。生物炭和粪肥能有效降低镉、铅等重金属对大麦植株的负面影响。此外,还有助于增加大麦根和芽中锌和铜的积累。我们的研究结果揭示了生物炭和粪便在金属胁迫下提高作物产量的潜力,从而保证了在压力条件下的粮食供应和可持续农业。然而,未来的研究需要集中在田间规模上,测试金属对污染土壤中作物生产力和粮食积累的长期影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Improvement of root architecture, Pb, Cu and Zn uptake, translocation and phytoremediation efficiency of barley (Hordeum vulgare) through the application of biochar and sheep manure.

Mining soil is considered a serious source of metal contamination worldwide due to its translocation and accumulation in various plant parts, causing severe impacts on plant growth. Results indicated that biochar and manure improved barley root morphology compared to contaminated soil. Moreover, Pb and Cu were highly translocated to shoots. Regarding treatments, manure 10% and 20% increased the Pb accumulation in roots, while animal manure 20% and biochar 2.5% increased its accumulation in shoots. Using manure of 10%, 20%, and biochar 2.5% promoted the accumulation of Zn in roots (bioaccumulation factor: BAFroot≥1). According to the Dickson quality index and tolerance index, barley plants showed a high tolerance for metals in soil. Biochar and manure were effective in reducing the negative effects of metals such as Cd and Pb on barley plants. Moreover, helps to increase the accumulation of Zn and Cu in barley roots and shoots. Our findings provide insight into the potential of biochar and manure to enhance crop production under metal stress, leading to the assurance of food supply and sustainable agriculture under stressful conditions. However, future research is highly needed, focusing on a field scale and testing metals' long-term effects on crop productivity and grain accumulation in contaminated soil.

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来源期刊
International Journal of Phytoremediation
International Journal of Phytoremediation 环境科学-环境科学
CiteScore
7.60
自引率
5.40%
发文量
145
审稿时长
3.4 months
期刊介绍: The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.
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