摘要： 采用温室土培盆栽试验研究了铜、锌、铅和镉复合污染对番茄生长和重金属累积规律的影响。试验结果表明,随着土壤加入铜、锌、铅和镉含量的增加,番茄根中铜、锌、铅和镉的含量呈明显的上升趋势,茎叶中锌和镉的含量也呈明显的上升趋势,铜和铅的含量增加幅度不大,果实中铜、锌、铅和镉的含量增加幅度也不大。番茄茎叶铜、锌、铅和镉的吸收量远远大于果实和根系的吸收量。当土壤加入铜、锌、铅和镉含量较高时,茎叶铜和铅的吸收量随生物量下降而降低。番茄茎叶铜、锌和铅的吸收量随着土壤重金属含量的增加呈先上升后下降的趋势。番茄茎叶镉的吸收量随土壤重金属含量的增加呈一直上升的趋势。随着土壤重金属含量的增加,果实中的铜、锌、铅和镉的吸收量变化不明显,根中铜和铅的吸收量呈一直增加的趋势,而锌和镉的吸收量变化幅度不大。在同一土壤重金属处理条件下,番茄各部位对铜、锌、铅和镉的富集能力大小顺序为镉>锌>铜>铅。相同土壤重金属处理条件下,番茄对同一重金属元素的富集能力顺序为根>茎叶>果实。
关键词:
复合污染,
番茄,
生长,
重金属,
累积,
规律
Abstract: Heavy metal pollution in agricultural land becomes more and more serious in recent years. The soil culture experiments were performed to study the effects of combined pollution of Cu,Zn } Pb and Cd on growth of tomato and heavy metal accumulation regularity. The results showed that with the increasing of soil heavy metals Cu,Zn,Pb and Cd,the content of Cu,Zn,Pb and Cd in root of tomato were obviously increased. Zn and Cd content stems and leaves were increased. Cu and Pb content in stems and leaves were and Cd content in fruits were increased slightly. Cu,Zn,Pb and Cd uptake in not obviously increased,Cu,Zn, stems and leaves of tomato were far greater than that of fruits and roots. When the soil heavy metals content were higher Cu and Pb uptake in the stems and leaves decreased due to the decreasing of biomass. With the increasing of soil heavy metals content,Cu,Zn and Pb uptake in leaves of tomato were firstly increased and then decreased. With the increasing of heavy metals content in soil,Cd uptake in stems and leaves in tomato was rising trend. With the increasing of soil heavy metals content Cu,Zn,Pb and Cd uptake in fruits were not changed significantly,Cu and Pb uptake in root was always increased,while Zn and Cd uptake in root changed slightly. In the same soil heavy metal processing conditions,the accumulation ability of heavy metal elements in each part of tomato was Cd>Zn>Cu>Pb. The distribution of heavy metals of Cu,Zn,Pb and Cd in different parts of tomato was root>stem and leaf>fruit.
Key words:
Combined pollution,
Tomato,
Growth,
Heavy metal,
Accumulation,
Regularity
中图分类号:
茹淑华, 张国印, 贡冬梅, 孙世友, 王凌, 耿暖. 铜、锌、铅和镉复合污染对番茄生长和重金属累积规律的影响[J]. 华北农学报, 2013, 28(S1): 371-375. doi: 10.7668/hbnxb.2013.S1.070.
RU Shu-hua, ZHANG Guo-yin, GONG Dong-mei, SUN Shi-you, WANG Ling, GENG Nuan. Effects of Combined Pollution of Cu，Zn，Pb and Cd on Growth of Tomato and Heavy Metal Accumulation Regularity[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(S1): 371-375. doi: 10.7668/hbnxb.2013.S1.070.