Abstract: Based on the 1∶50 000 geochemical survey of soil environmental quality, the high-precision element contents or indexes on surface soils and crops in 191.76 km2 were obtained from Jinbi and Jinxing villages, Wumen Mountain Area, Guizhou. The results showed that 99% of the surface soils met the national standard on soil environmental quality, and the proportions of selenium (Se)-rich soils and zinc (Zn)-rich soils could be reached as 62% and 99%, respectively, which were closely related to coal bearing stratum and carbonate stratum. Furthermore, some staple crops, such as teas, soybeans, rapes, corns and garlics growing in the Se-rich soils could meet the Se-rich crop standard. It is important to investigate and evaluate the “green” Se-rich soils and agricultural products in karst areas with fragile ecology. The big database on soil and agriculture products quality was also proposed to ensure food safety in Guizhou.

Key words: soil, agriculture products, geochemistry, investigation and evaluation, selenium-rich and zinc-rich

摘要： 通过1∶50 000土壤环境质量地球化学调查示范，获得了贵州省乌蒙山区金碧镇和锦星乡面积约191.76 km2范围内表层土壤、农作物等介质中元素或指标的高精度分析数据。研究区符合国家土壤环境质量标准的安全土壤占比约99%。土壤中硒、锌等生命健康元素含量丰富，富硒、锌土壤面积占比分别达62%和99%，与区内含煤岩系、碳酸盐岩系成土母质紧密相关。富硒、锌特色农产品有茶叶、油菜、大豆、玉米、大蒜等。在生态环境脆弱的岩溶石山地区，发现并评价绿色富硒、锌土壤及其特色农产品，可为乌蒙山区精准扶贫提供依据和示范效应。因此，全面开展贵州省土壤环境质量地球化学调查，科学准确标定每寸土地，建立土壤与农产品质量大数据信息库对于确保食品原产地安全具有重大现实和历史意义。

关键词: 土壤, 农产品, 地球化学, 调查评价, 富硒、锌