Environmental Quality Assessment of Heavy Metals in Tea Soil of Anxi County

In order to understand the environmental conditions of tea plantations in Anxi County, 20 soil samples were collected from the main tea producing areas in Anxi County. According to the environmental quality requirements of green food producing areas of the Ministry of Agriculture and Rural Affairs of China, the single pollution index method and comprehensive index method were used to evaluate and analyze the soil environment of tea producing areas. The results showed that the contents of six heavy metals such as cadmium, mercury, arsenic, lead, chromium and copper in the soil of the main tea producing areas in Anxi County were all less than the limit value of GB 2762-2017 ″Pollution Limits in Food of National Standard for Food Safety″. The single pollution index and comprehensive pollution index of 20 soil samples were all less than 1, among which the comprehensive pollution index of 18 soil samples was less than 0.7, belonging to the clean level, and the comprehensive pollution index of 2 soil samples was between 0.7 and 1.0, belonging to the clean level. The quality of soil environment in the main tea producing areas of Anxi County was generally good, which met the environmental quality requirements of green food producing areas and was suitable for the development of green food tea.