Effect of Exogenous Cd Pollution on Red Soil and Wheat

2018 5th International Conference on Advanced Composite Materials and Manufacturing Engineering

Ma, Lin^1,2,3,4 ; Liu, Miao^1,5

Shaanxi Provincial Land Engineering Construction Group Co. Ltd, Xi'an

710075, China^1

Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group, Co. Ltd, Xi'an

710075, China^2

Key Laboratory of Degraded and Unused Land Consolidation Engineering, Ministry of Land and Resources, Xi'an

710075, China^3

Shaanxi Provincial Land Consolidation Engineering Technology Research Center, Xi'an

710075, China^4

Shaanxi Construction of Land Comprehensive Development Co. Ltd, Xi'an

710075, China^5

关键词: Above ground biomass;    Atomic absorption spectrophotometer;    Cd concentrations;    Growth and development;    Jiangxi Province;    Straw biomass;    Toxic elements;    Wheat cultivars;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/394/5/052043/pdf
DOI  :  10.1088/1757-899X/394/5/052043

来源: IOP

【 摘 要 】

Cadmium is a toxic element and highly mobile in soil. Cadmium can inhibit the growth and development of crops, leading to reduced yield and quality. The objectives of this experiment were (1) to determine the effect of exogenous Cd pollution on Cd concentration in red soil and (2) to measure the effect of exogenous Cd pollution on Cd uptake and yield of wheat. The wheat cultivar was Wanmai 52. The study was done in Yujiang county, Yingtan city, Jiangxi province. Three Cd concentrations of 0, 0.3, 0.6 mg/kg were applied in a randomized complete block design with three replications. Cadmium concentrations were determined with an atomic absorption spectrophotometer. The results indicated that exogenous Cd pollution had no significant effect on the grain yield, straw biomass, and total above ground biomass. The total soil Cd concentration increased significantly after Cd contamination. The Cd concentration in the 0.6 mg/kg treatment was nearly three times that in the 0.3 mg/kg treatment. Exogenous Cd pollution significantly increased Cd uptake by wheat grain. The uptake increased as Cd concentration increased. The effects of Cd pollution on Cd uptake by wheat and above ground biomass were not significant. In conclusion, the control of exogenous Cd input to soil is the fundamental way to reduce soil Cd pollution and improve crop quality.