作 者：
曲贵伟;Amarilis de Varennes;依艳丽
关键词：
聚丙烯酸盐;矿区土壤修复;植物生长;土壤性质
摘 要：
采用盆栽试验方法,研究了聚丙烯酸盐对长期重金属污染的矿区土壤的修复作用。结果表明,与对照相比,使用聚丙烯酸盐可以显著提高土壤的持水能力,其中0.6%聚丙烯酸盐处理土壤在达到最大持水量时比对照增加了近4倍。然而在作物生长过程中,使用聚丙烯酸盐修复的土壤持水量逐渐下降,这可能是由于聚丙烯酸盐与土壤中重金属结合后其吸水能力下降所造成的。与对照相比,聚丙烯酸盐的应用使果园草生长得到明显改善,从整个4茬的果园草生长来看,0.4%的聚丙烯酸盐的处理表现最为突出。使用聚丙烯酸盐处理的土壤pH随着使用数量的增加而增加,不同水平聚丙烯酸盐处理之间差异显著。与对照相比,0.4%和0.6%的聚丙烯酸盐处理的土壤pH增加更显著。不同水平聚丙烯酸盐处理(0.2%、0.4%、0.6%)的土壤中水溶性重金属的含量均比对照显著降低(P≤0.05)。然而,聚丙烯酸盐数量的增加对土壤中水溶性Zn和Pb的含量影响不显著(P≤0.05)。对于土壤水溶性Cu而言,0.4%和0.6%的聚丙烯酸盐的处理之间差异不显著(P≤0.05),但与0.2%的聚丙烯酸盐的处理之间差异显著(P≤0.05)。试验结果表明,聚丙烯酸盐可以用于修复长期重金属污染的矿区土壤。
译 名：
Effect of Insoluble Polyacrylate Polymers on Plant Growth and Soil Quality in a Long-term Heavy Metal Contaminated Mine Soil:I soil water retention capacity,plant growth, soil pH and water extractable heavy metal
作 者：
QU Gui-wei1, Amarilis de Varennes2, YI Yan-li1 (1.Soil and Environmental Collage, Shenyang Agricultural University, Shenyang 110161, China;2.Department of Agricultural and Environmental Chemistry, Instituto Super Agronomia, Lisboa 1349-107, Portugal)
关键词：
polyacrylate polymers;remediation of mine soil;plant growth;soil quality
摘 要：
We investigated the effects of different application rates of insoluble polyacrylate polymers on plant growth and quality of soil from S.Domingos mine, contaminated with a broad range of heavy metals.The polymer increased the water-holding capacity of the soil from about 250 g·pot-1 in un-amended soil to almost 1 000 g·pot-1 in soil with 0.6% polymer.However, the water-holding capacity of soil decreased progressively, which may contribute to the polymer absorption for heavy metals such as Cu, Zn and Pb etc.Growth of orchard grass was stimulated in the polymer-amended soil.The greatest accumulated biomass of four cuttings was obtained in soil amended with 0.4% of polymer.Moreover, the soil pH was increased with the application rates of polymer and the soil amended with 0.4% and 0.6% of polymer showed significant differences compared with the un-amended soil.The water-extractable heavy metals of soil were decreased in the soil amended with polymer as compared with the control, however, the increasing level of polymer had no significant effect on the concentration of soil water-extractable Zn and Pb (P≤ 0.05) .As for the concentration of water-extractable Cu of soil, no significant difference(P≤ 0.05) was shown in the soil amended with 0.4% and 0.6% of polymers, but as compared with the treatment of 0.2% of polymer, the difference was significant(P≤ 0.05).All the results demonstrated that the insoluble polyacrylate polymer could be used for reclaiming the long-term contaminated mine soil with heavy metals.
