影响水稻吸收镉的环境因子分析

Analysis of Environmental Factors Affecting Cadmium Uptake in Rice

采用大田调查与数理统计方法,研究了影响水稻吸收重金属镉的相关环境因子。结果表明,稻米Cd与土壤pH、有效Fe、Mn、Zn以及全Ca、Mg、Mn之间呈负相关关系,且与土壤pH达极显著负相关,相关系数为-0.672;与土壤有机质、有效Cd、全Cd之间则呈正相关关系,且与土壤有机质、有效Cd达极显著正相关,相关系数分别为0.579、0.631。

Field investigation anti the mathematical statistic method were conducted to investigate the effect of environmental factors on the cadmium uptake of heavy metals in rice. The results showed that there was a negative correlation between Cd and soil pH, Mn, Fe, Zn, Mg, Mn, and among them the soil pH were significantly negative correlated with Cd （ -0. 672 ） ; whereas the correlation coefficient between Cd, the soil organic matter, available Cd, and total Cd were positively correlated, in which the soil organic matter and available Cd were significantly positive correlated with Cd. The correlation coefficients were 0. 579 and 0.631, respectively.