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利用双穗雀稗 (Paspalumdistichum)的重金属耐性生态型 ,结合土壤、垃圾和石灰改良尾矿 ,在广东乐昌进行了为期一年的尾矿植被重建的野外试验 .重金属毒性和极端贫瘠是乐昌铅锌尾矿植物定居的限制因子 .野外试验第 1次收割结果表明 (3个月 ) ,双穗雀稗可以在乐昌铅锌尾矿正常生长 ,而尾矿覆盖 5cm的土壤或垃圾则可大幅度提高它的生物量 .施用石灰不仅促进植物的生长 ,同时可抑制植物对重金属的吸收 .第 2次收割结果表明 (1年 ) ,除了TDL处理 (尾矿 +5cm垃圾 +石灰 )双穗雀稗的生物量较第 1次收割有着极显著的提高 ,但各处理组 (尤其是TDL处理 )植物体内的重金属含量普遍有所降低 .实验证明利用耐性植物可在经轻度改良的尾矿上成功定居 .
A field trial of one-year tailings revegetation was carried out in Lechang, Guangdong, using the heavy metal tolerant ecotype Ectropis fortunei (Paspalum distichum) combined with improved tailings from soil, litter and lime. The heavy metal toxicity and extreme infertility Limiting Factors for Plant Settling in Lead-Zinc Tailings The results of the first harvest in the field trial (3 months) indicated that B. paspalum could normally grow at Lechang Pb-Zn tailing, while tailings covering 5 cm of soil or rubbish could be Significantly increase its biomass.Lithoside not only promote plant growth, but also inhibit plant absorption of heavy metals.The results of the second harvest (1 year), in addition to TDL treatment (tailings + 5cm garbage + lime) Paspalum biomass significantly increased compared with the first harvest, but the content of heavy metals in plants of all treatment groups (especially TDL treatment) generally decreased.Experiments proved that the use of tolerant plants in the lightly modified tailings On the successful settlement.