攀西地区主要蔬菜和水果基地土壤Zn污染调查研究

Study on Pollution of Zn in Soil of Vegetable-fruit Bases in Panxi

根据各水果、蔬菜基地的分区定点采样结果的对比分析，研究了四川省攀西地区主要蔬菜和水果基地土壤中Zn含量。结果表明，该区土壤Zn平均值范围在75．0～160mg／kg之间。各基地土壤平均锌含量顺序为：撒莲蔬菜基地〉攀莲蔬菜基地〉会理石榴基地〉大田石榴基地〉西区芒果、桂圆基地〉仁和芒果基地〉盐边芒果、枇杷基地。7个基地中有3个基地的土壤锌含量不同程度超过土壤环境质量Ⅱ级标准，其中以大田石榴基地超标最高（16％），平均值却是两个蔬菜基地最高。

Zn contents in soils of plantation bases for vegetable and fruit of Panxi, Siehuan Province were studied through sampling and analysis at assigned regions and sites. The results showed that the average Zn content was between 75. 0 and 160mg/kg in this area. The rank of average Zn content of the soil in the bases is as follows： Salian Vegetable Base 〉 Panlian Vegetable Base 〉 Huili Pomegranate Base 〉 Datian Pomegranate Base 〉 Xiqu Mango and Longan Base 〉 Renhe Mango Base 〉 Yanbian Mango and Loquat Base. The Zn contents in three of the seven bases were beyond the Class Ⅱ of the environmental standard of soil. The Zn content in Datian Pomegranate Base got the most that was higher than standard by 16%, while the highest average value appeared in the two vegetables bases.