Sabir Muhammad, Ali Amanat, Zia-Ur-rehman Muhammad, Hakeem Khalid Rehman
a Institute of Soil and Environmental Sciences, University of Agriculture , Faisalabad , Pakistan.
Int J Phytoremediation. 2015;17(7):613-21. doi: 10.1080/15226514.2014.898019.
We investigated effect of farm yard manure (FYM) and compost applied to metal contaminated soil at rate of 1% (FYM-1, compost-1), 2% (FYM-2, compost-2), and 3% (FYM-3, compost-3). FYM significantly (P < 0.001) increased dry weights of shoots and roots while compost increased root dry weight compared to control. Amendments significantly increased nickel (Ni) in shoots and roots of maize except compost applied at 1%. FYM-3 and -1 caused maximum Ni in shoots (11.42 mg kg(-1)) and roots (80.92 mg kg(-1)), respectively while compost-2 caused maximum Ni (14.08 mg kg(-1)) and (163.87 mg kg(-1)) in shoots and roots, respectively. Plants grown in pots amended with FYM-2 and compost-1 contained minimum Cu (30.12 and 30.11 mg kg(-1)) in shoots, respectively. FYM-2 and compost-2 caused minimum zinc (Zn) (59.08 and 66.0 mg kg(-1)) in maize shoots, respectively. FYM-2 caused minimum Mn in maize shoots while compost increased Mn in shoots and roots compared to control. FYM and compost increased the ammonium bicarbonate diethylene triamine penta acetic acid (AB-DTPA) extractable Ni and Mn in the soil and decreased Cu and Zn. Lower remediation factors for all metals with compost indicated that compost was effective to stabilize the metals in soil compared to FYM.
我们研究了以1%（农家肥-1、堆肥-1）、2%（农家肥-2、堆肥-2）和3%（农家肥-3、堆肥-3）的比例将农家肥（FYM）和堆肥施用于金属污染土壤的效果。与对照相比，农家肥显著（P < 0.001）增加了地上部和根部的干重，而堆肥增加了根部干重。除了1%的堆肥处理外，改良剂显著增加了玉米地上部和根部的镍（Ni）含量。农家肥-3和-1分别导致地上部（11.42 mg kg⁻¹）和根部（80.92 mg kg⁻¹）的镍含量最高，而堆肥-2分别导致地上部（14.08 mg kg⁻¹）和根部（163.87 mg kg⁻¹）的镍含量最高。用农家肥-2和堆肥-1改良的盆栽植物地上部的铜含量最低（分别为30.12和30.11 mg kg⁻¹）。农家肥-2和堆肥-2分别导致玉米地上部的锌含量最低（59.08和66.0 mg kg⁻¹）。农家肥-2导致玉米地上部的锰含量最低，而与对照相比，堆肥增加了地上部和根部的锰含量。农家肥和堆肥增加了土壤中碳酸氢二乙烯三胺五乙酸（AB-DTPA）可提取的镍和锰含量，并降低了铜和锌含量。与农家肥相比，堆肥对所有金属的修复因子较低，表明堆肥在稳定土壤中的金属方面更有效。
