环境中的硒和大骨节病的关系已有较多的研究报道确认我国大骨节病分布于由东北向西南的低硒地带。但是经调查表明低硒环境下并不都有大骨节病的发生,这种低硒非病区在云南、四川、陕西等省均有发现。为了探讨硒以外的因素,对西南低 The relationship between selenium and Kashin-Beck disease in the environment has been reported in more studies confirming the distribution of Kashin-Beck disease in the low-selenium zone from northeast to southwest. However, the survey shows that low selenium environment does not have the occurrence of Kashin-Beck disease, this low-selenium non-ward found in Yunnan, Sichuan, Shaanxi and other provinces. In order to explore the factors other than selenium, southwest low