【摘要】 采用温室盆栽试验研究了黑麦草对土壤中Cu、Zn污染的忍耐和积累能力,以了解这种植物作为Cu、Zn污染土壤修复的可能性及其潜力。结果表明黑麦草对Cu、Zn有极好的忍耐能力,而且随时间的延长而增强。与对照相比,在土壤加入100mg/kgCu的处理中,第一茬黑麦草产量降低29.4%,而叶片积累Zn浓度为58mg/kg,Cu浓度为98.2mg/kg;在添加240mg/kgZn的土壤中生长的黑麦草产量仅下降19.4%,而叶片中积累Zn平均浓度为255.4mg/kg、Cu平均浓度为21.2mg/kg,随时间的延长积累浓度下降。两茬实验中,加入100mg/kgCu的处理中共计积累移出了Cu218.6μg/kg,相当于Cu添加量的0.22%,添加240Zn的土壤中积累移出了Zn568.7μg/kg,相当于Zn添加量0.24%。试验认为黑麦草对Cu、Zn有极强的忍耐和较好的富集能力,是有潜力的Cu、Zn矿区复绿和修复Cu、Zn污染土壤的植物。更多还原

【Abstract】 The endurance and accumulative ability of Cn?Zn pollution in soil were studied by experiment of potted plant in greenhous in order to find out the possible and potential restorative abilities of this plant. The result demonstrated that ryegrass had excellent endurance of Cu and Zn, and the longer the time was,the stronger endurance it had. Compared with CK, in the treatment of 100 mg·kg^-1 Cu added in soil, the product of ryegrass decreased in the first stubble by 29.4 %, and the Zn concentration was 58 mg·kg^-1 as well as the Cu concentration was 98.2 mg·kg^-1 in its leaves. But in the treatment of 240 mg·kg^-1 Zn added in soil, the product of ryegrass decreased in the first stubble by 19.4 %, and the Zn concentration was 255.4 mg·kg^-1 as well as the Cu concentration was 21.2 mg·kg^-1 in its leaves, and the longer the time was, the lower the concentration was. In the treatment of 100 mg·kg^-1 Cu, 218.6 μg·kg^-1 Cu was removed from the soil,which was equaled to 0.22 % of the total Cu quantity. While in the treatment of 240 mg·kg^-1 Zn, 568.7 μg·kg^-1 Zn was removed from the soil,which was equaled to 0.24 % of the total Zn quantity. The experiment showed that ryegrass had wonderful endurance and better enrichment ability, which proved that this plant had potential ability of restoring Cn and Zn polluted soil in mineral districts, and also it could make these areas become green again.更多还原