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首页> 外文期刊>Ecotoxicology and Environmental Safety >Cow manure-loaded biochar changes Cd fractionation and phytotoxicity potential for wheat in a natural acidic contaminated soil
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Cow manure-loaded biochar changes Cd fractionation and phytotoxicity potential for wheat in a natural acidic contaminated soil

机译：牛粪中装载的生物炭改变了天然酸性污染土壤中小麦的镉分离度和植物毒性潜力

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摘要

The current study aims to investigate the implications of amending a soil contaminated with Cd with peanut residues biochar (BP) solely or in combination with cow manure (CMPB) at different rates on phytotoxicity of Cd for wheat plants and its distribution in a mine contaminated soil. Soil pH and EC increased progressively in soils amended with either PB or CMPB. Exchangeable Cd was decreased while its non-exchangeable fractions were increased. Dry weights of wheat straw, roots and grains increased when soils amended with either PB or CMPB, especially at the higher application rate. Such increases were correlated significantly with the extractable soil-Cd. Concentrations of Cd in roots were higher than those in straw; whereas, the concentrations in grains seemed to be the lowest. Generally, values of bio-concentration and translocation factors did not exceed "1" and decreased with application of either PB or CMPB. In conclusion, enriching biochar with cow manure is a recommended strategy to reduce Cd uptake and translocation to straw and seeds. Moreover, Concentrations of Cd did not exceed the permissible levels in grains when soils amended with the highest rate of CMPB.
机译：当前的研究旨在调查以不同比例修改单独被花生残留生物炭（BP）或与牛粪（CMPB）结合的被镉污染的土壤对小麦植物镉的镉毒性及其在地雷污染土壤中的分布。用PB或CMPB改良的土壤的pH和EC逐渐升高。可交换的镉减少，而其不可交换的分数增加。当用PB或CMPB改良土壤时，小麦秸秆，根和谷物的干重增加，特别是在较高的施用量下。这种增加与可提取的土壤镉显着相关。根中Cd的浓度高于秸秆中的Cd。而谷物中的浓度似乎最低。通常，生物浓度和易位因子的值不超过“ 1”，而随着使用PB或CMPB而降低。总之，用牛粪肥丰富生物炭是减少镉吸收和转移到稻草和种子中的推荐策略。此外，当以最高的CMPB比例修改土壤时，Cd的浓度未超过谷物中允许的水平。

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  • 来源
    《Ecotoxicology and Environmental Safety》 |2018年第10期|348-353|共6页
  • 作者

    Mohamed Ibrahim; Ali Maha; Ahmed Nevin; Abbas Mohamed H. H.; Abdelsalam Mohamed; Azab Ahmed; Raleve David; Fang Chen;

  • 作者单位

    Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China;

    Benha Univ, Soils & Water Dept, Fac Agr, Toukh 13736, Kalyoubia, Egypt;

    Benha Univ, Plant Protect Dept, Fac Agr, Toukh 13736, Kalyoubia, Egypt;

    Benha Univ, Soils & Water Dept, Fac Agr, Toukh 13736, Kalyoubia, Egypt;

    Benha Univ, Soils & Water Dept, Fac Agr, Toukh 13736, Kalyoubia, Egypt;

    Agr Res Ctr, Agr Engn Res Inst, Cairo 256, Egypt;

    Grad Univ, Chinese Acad Sci, Beijing 100049, Peoples R China;

    Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Cadmium; Fractionation; Accumulation; Biohcar; Contaminated soils;

    机译：镉;分馏;累积;生物量;污染土壤;

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