CAJ | 학술논문

黔西北赫章县炼锌造成大量的废弃地,土地复垦成为当地面临的主要问题.为大面积的土地复垦提供基础数据,在平整的废渣堆卜用0、25和50 kg/m~2的碱石灰做隔离层,然后在隔离层上覆以30、45和60 cm的非污染区土壤,共9个处理;选用当地的主要农作物红豆、白菜、玉米和马铃薯进行试验.通过近2 a对红豆、白菜、玉米和马铃薯可食部分和复垦土壤的重金属进行One-Way ANOVA(LSD)分析和富集系数比较得出碱石灰隔离层降低了农作物可食部分的重金属含量;玉米是对重金属富集系数最小的农作物,适合作为十地复垦的首选农作物,而白菜对重金属的富集系数最大,不适合在炼锌区复垦土壤种植;经济有效的碱石灰隔离层厚度为25 kg/m,复垦土壤的厚度为30 cm.
검서북혁장현련자조성대량적폐기지,토지복은성위당지면림적주요문제.위대면적적토지복은제공기출수거,재평정적폐사퇴복용0、25화50 kg/m~2적감석회주격리층,연후재격리층상복이30、45화60 cm적비오염구토양,공9개처리;선용당지적주요농작물홍두、백채、옥미화마령서진행시험.통과근2 a대홍두、백채、옥미화마령서가식부분화복은토양적중금속진행One-Way ANOVA(LSD)분석화부집계수비교득출감석회격리층강저료농작물가식부분적중금속함량;옥미시대중금속부집계수최소적농작물,괄합작위십지복은적수선농작물,이백채대중금속적부집계수최대,불괄합재련자구복은토양충식;경제유효적감석회격리층후도위25 kg/m,복은토양적후도위30 cm.
Due to indigenous zinc smelting, lots of lands were polluted and abandoned in Hezhang County, GuizhouProvince. The reclamation of polluted soils is becoming more important to improve environmental protection and toprompt agricultural production in these areas. In the present study, total of nine treatments of different amount of lime (0,25 and 50 kg/m~2) was used as isolation layer in the flat slag heap, and then the isolation layer was covered with differentmount of non-contamination soil (30, 45 and 60 cm), respectively. During the following two years, bean (Phaseolusangularis), Chinese cabbage (Brassica chinensis), maize (Zea mays) and potato (Solarium tuberosum) were planted,concentrations of some metals (Zn, Pb, Cd) in soils and the edible part of the crops were determined to assess the effectsof reclamation by statistical analysis of One-Way ANOVA (LSD). The results indicated that metal concentrations in ediblepart of the crops were decreased by the treatments of limestone isolation layer; maize had the lowest enrichment factor ofheavy metals among the four crops, while Chinese cabbage had the highest content, demonstrating that maize was moresuitable to be cultivated compared with the others, lime as isolation layer could significantly reduce the accumulation ofheavy metals in the edible part of the crops, and 25 kg/m~2 lime isolation layer combined with 30 cm non-contaminationsoil cover showed the effective reclamation result.