陕西省改水防治地方性氟中毒效果评价王亚平张继卯白广禄陕西省是全国饮水型氟中毒重病区，具有面积大、患者多、病情重的特点。饮水型氟中毒病区占全省三分之二，病区分布在６６个县（市），５５１个乡（镇），５５００个自然村，特重病区２０２个，重病区２６８个，中等... Shaanxi Province, water diversion prevention and control of endemic fluorosis effect evaluation Wang Yaping Zhang Jimei Bai Guanglu Shaanxi Province is a drinking water fluorosis poisoning area, with a large area, patients, heavy illness characteristics. Drinking water fluorosis area accounts for two thirds of the province, ward distribution in 66 counties (cities), 551 townships (towns), 5500 villages, especially heavy ward 202, heavy ward 268, medium. .