从土壤地球化学看宁夏平罗县砷、氟中毒地方病的起因与分布

Causes and distribution of endemic disease about arseniasis and fluorosis in Pingluo country from a view of geochemistry

宁夏平罗县地处银川平原北部,是宁夏地方病较严重的地区之一.在平罗县采取大量土样进行测定分析,并与各元素的基准值进行比较,研究砷、氟中毒地方病在平罗县的起因和分布.结果表明:砷中毒与该地区地下水的运移和地层岩性有关;氟中毒主要受该地区地表次生盐渍化的影响.揭示了农业生产中不合理引用地表水与地方病之间的关系.应通过调节人类自身的行为来预防地方病,合理利用土地资源.

Pingluo County is located in north of Yinchuan Plain, it is one of areas where endemic is severe in Ningxia province. Alot of soil samples has been tested, and with the reference value of each element compared to study the arsenisis and fluorosis causes and distribution in Pingluo County, it came to the arsenic poisoning and the migration region of groundwater and formation lithology. Fluorosis is mainly affected by secondary salinization in the area of surface effects. Which reveals the irrational reference to surface water in agricultural production and the relationship between endemic, makes the people to realize the causes of endemic, and by regulating the behavior of human beings to prevent endemic diseases, people should guide the rational use of land resources.