Analysis of the Difference and Causes in Rice Cadmium Uptake Factor in Typical South Region
LI Zhitao
WANG Xiahui
ZHAO Yujie
JI Guohua
LIU Ruiping
MENG Linglong
SONG Zhixiao
Abstract：The difference of rice cadmium uptake factor (UF) in different districts in South China was studied.One-way ANOVA showed there were significant differences in the UF and that can be categorized in 4 types:high (with the means and SD of UF as (0.96±0.73),middle-high (0.64±0.59),middle-low(0.29±0.22) and low uptake type(0.26:±0.30).The middle-low and low UF (with the mean value of UF ranged between 0.2 and 0.3) were the most common in 19 research districts.Soil pH,organic matter (SOM),texture,type,cadmium contents and the ratio of zinc to cadmium (Zn/Cd) were studied to discover the causes of the difference of the rice cadmium UF.The results showed that soil pH was the most important factor that affect the UF of rice cadmium and the Weibull models can be used to illustrate the relationship between the soil pH and the UF.The influence of the SOM to UF was weaker than that of the soil pH.The soil texture had more influence to the UF in acid soil than in alkaline soils.The Zn/Cd ratio of soil was also an important factor affecting the uptake of cadmium by rice.High Zn/Cd ratio of soil tended to reduce significantly the uptake of soil cadmium by rice.There were different manifestations of the affection of the soil type and the soil cadmium contents to the UF in different research districts.
Keywords：cadmiumriceuptake facor(UF)soil
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 1-7 )