Study on the Influence of Soil Chemical Properties on the Content of Heavy Metal Elements in Soil and the Bulbs of Baodi Garlic
To understand the impact of soil physicochemical properties on the migration and accumulation of heavy metal elements in the soil-plant system,this study took the garlic cultivation area in Baodi,Tianjin as an example.By measuring the pH,cation ex-change capacity,organic matter,water-soluble salts,and SiO2 content in the soil,as well as analyzing the heavy metal element con-tents of Cr,Cu,Ni,Pb,Zn,Cd,As,and Hg in both the soil and garlic,the obtained data were subjected to correlation analysis and multiple regression analysis using SPSS software.The results indicated that Ni in the four media of topsoil,subsoil,bulb,and plant,Cu in the three media of topsoil,bulb,and plant,Cr and Cd in the two media of topsoil and subsoil,and Zn and As in the two media of bulb and plant,all show significant positive correlations,suggesting a close relationship in the transformation and migration of these elements among different media.Factors such as soil pH and SiO2 content significantly influenced the absorption and accumulation of Cu and Cd in garlic bulbs.Sulfate ions(SO42-)played a significant regulatory role in adjusting the As,Cu,Ni,and Zn levels in the soil-garlic system.In conclusion,the study provides important reference information for agricultural management and environmental protection.
soil physicochemical propertiesheavy metal elementsBaodi garlicregression analysis
万方数据
维普
