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首页> 外文期刊>Journal of Applied Life Sciences International >Effect of Biochar Amendment on Heavy Metals Concentration in Dumpsite Soil and their Uptake by Amaranthus (Amaranthus cruentus)
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Effect of Biochar Amendment on Heavy Metals Concentration in Dumpsite Soil and their Uptake by Amaranthus (Amaranthus cruentus)

机译：生物炭改良剂对D石土壤重金属含量及其对A菜吸收的影响

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摘要

A pot experiment was conducted in screen house of Faculty of Agriculture, Nasarawa State University Lafia, Nigeria during the dry season of 2014 to assess the presence of heavy metals and the effect of biochar on the concentration of these heavy metals in dumpsite soil and their uptake by Amaranthus ( Amaranthus cruentus ). Five kilogram of dumpsite soil was filled into 27 plastic buckets. The experimental design used was completely randomized design (CRD) and the treatments consisted of three levels of both sawdust and rice husk biochars: 0, 60, 120 g, factorially combined to form 9 treatments and laid out in the screen house. The result revealed that the dumpsite soil was contaminated with heavy metals and their concentration in ascending order in the soil is as follows: Pb-1) was above FEPA allowable limit of 3 mgkg-1. There was a significant (p-1), nickel (0.53 mgkg-1) and manganese (0.66 mgkg-1); but increased the concentration of lead (1.79 mgkg-1) and zinc (6.82 mgkg-1) in the soil. Also, 120 g of saw dust biochar reduced the concentration of cadmium (0.27 mgkg-1), nickel (0.55 mgkg-1) and manganese (0.71 mgkg-1). Both rice husk and sawdust biochars rates applied in dumpsite soil significantly (p< 0.05) reduced the quantities of manganese uptake by amaranthus plant. However, the uptakes of cadmium, zinc, lead and nickel by amaranthus were not significantly (p< 0.05) affected by the application of different rates of both rice husk and sawdust biochars; but an increased in both biochars applied on dumpsite soil resulted to a gradual decrease in the entire heavy metals uptake by amaranthus plant. The combined effect of rice husk and sawdust biochar did not showed any significant effect on the concentration of heavy metals in dumpsite soil and subsequent uptake by Amaranthus.
机译：在2014年旱季期间，在尼日利亚纳萨瓦瓦州立大学拉菲亚农业学院的筛选室进行了盆栽试验，以评估重金属的存在以及生物炭对垃圾场土壤中这些重金属的浓度及其吸收的影响。由A菜（Amaranthus cruentus）。将5千克垃圾场土壤装入27个塑料桶中。所使用的实验设计是完全随机设计（CRD），处理包括三级木屑和稻壳生物炭：0、60、120克，分解组合形成9种处理，并布置在筛房中。结果表明，垃圾场土壤被重金属污染，其浓度按升序排列如下：Pb-1 ）高于FEPA允许限值3 mgkg -1 。显着（p-1 ），镍（0.53 mgkg -1 ）和锰（0.66 mgkg -1 ）;但增加了土壤中铅（1.79 mgkg -1 ）和锌（6.82 mgkg -1 ）的浓度。另外，120克锯末生物炭降低了镉（0.27 mgkg -1 ），镍（0.55 mgkgkg -1 ）和锰（0.71 mgkg - 1 ）。在垃圾场土壤中施用稻壳和木屑生物炭的比例均显着（p <0.05）降低了mar菜植物对锰的吸收量。然而，a菜和锯末生物炭的施用量不同，a菜对镉，锌，铅和镍的吸收没有显着影响（p <0.05）;但是施用在垃圾场土壤上的两种生物炭增加，导致a菜植物吸收的全部重金属逐渐减少。稻壳和木屑生物炭的联合作用对垃圾场土壤中的重金属浓度和随后的A菜吸收没有显着影响。

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