欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
以干旱区绿洲灰漠土为供试土壤,油菜（Brassica campestris L.）为供试植物,通过盆栽试验研究了Cd/Pb单一和复合胁迫下其在油菜体内的吸收和富集特征,并解析了油菜条件下Cd、Pb的交互作用.结果表明,Cd/Pb单一和复合胁迫下油菜体内Cd、Pb的含量均随着其胁迫浓度的增大而增大,但复合胁迫下油菜对Cd、Pb的吸收互为拮抗作用（Cd最大胁迫浓度〈7mg.kg^-1,Pb最大胁迫浓度〈1 500 mg.kg^-1）;Cd单一胁迫下油菜对其富集能力和其在油菜体内的迁移能力均随着其胁迫浓度的增加呈现先增大后减小的趋势,Pb单一胁迫下油菜对其富集能力和其在油菜体内的迁移能力则均随着其胁迫浓度的增加而持续减小;复合胁迫降低了油菜对Cd、Pb的富集能力和Pb在油菜体内的迁移能力,但提高了Cd在油菜体内的迁移能力;油菜对Cd的吸收能力和其在油菜体内的迁移能力均远远大于Pb;油菜对重金属Cd、Pb的吸收和迁移模式均符合二次方程.
英文摘要：
This paper investigated the effects of single Cd/Pb and Cd-Pb combined pollution of desert grey soils from the oasis regions on the uptake and translocation of Cd and Pb by rape（Brassica campestris L.）,and analyzed the interaction between Cd and Pb.The results of pot experiment showed that the concentration of Cd or Pb was promoted when the concentration of Cd in soil was less than 7.0 mg·kg^-1 and the concentration of Pb in soil was less than 1 500 mg·kg^-1 in single Cd/Pb and Cd-Pb combined pollution.There was an obvious antagonism between Cd and Pb in Cd-Pb combined pollution.As the concentration of Cd in soil increased in single Cd pollution,the enrichment and translocation ability of Cd in rape was firstly improved and then reduced.As the concentration of Pb in soil increased in single Pb pollution,the enrichment and translocation ability of Pb in rape was reduced continuously.The Cd-Pb combined stress reduced the enrichment capacity of Cd and Pb as well as the migration ability of Pb,but improved the migration ability of Cd.The enrichment and translocation ability of Cd was greater than that of Pb.Models of uptake and translocation of Cd and Pb in rape under single Cd/Pb and Cd-Pb combined stress were both well fitted to quadratic equations.
同期刊论文项目
同项目期刊论文
Effect of organic matter and calcium carbonate on behaviors of zinc adsorption-desorption on/from Ni
Interaction between Cd and Pb in the soil-plant system: a case study of an arid oasis soil-cole syst
Heavy metal accumulation by poplar in calcareous soil with various degrees of multi-metal contaminat
Effects of Ni stress on the uptake and translocation of Ni and other mineral nutrition elements in m
Bioaccumulation and translocation of cadmium in wheat (Triticum aestivum L.) and maize (Zea mays L.)
Effects on Ni and Cd speciation in sewage sludge during composting and co-composting with steel slag
PHYTOEXTRACTION POTENTIAL OF POPLAR (POPULUS ALBA L. VAR. PYRAMIDALIS BUNGE) FROM CALCAREOUS AGRICUL
Estimating realized and potential carbon storage benefits from reforestation and afforestation under
Physiological responses of Populus euphratica Oliv. to groundwater table variations in the lower rea
The canopy rainfall interception in actual and potential distribution of Qinghai spruce (Picea crass
Evaluation of water use of Caragana korshinskii and Hippophae rhamnoides in the Chinese Loess Platea
Restoration and conservation potential of destroyed Qinghai spruce (Picea crassifolia) forests in th
Characteristics of Caragana korshinskii and Hippophae rhamnoides stemflow and its significance in so
Soil CO2 efflux along an elevation gradient in Qinghai spruce forests in the upper reaches of the He
Soil water content and water balance simulation of Caragana korshinskii Kom. in the semiarid Chinese
SPECIES DISTRIBUTION MODELS TO ESTIMATE THE DEFORESTED AREA OF PICEA CRASSIFOLIA IN ARID REGION RECE
期刊信息
位置：