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为了解彝族近亲婚配的现状,1994 年5月在四川省凉山彝族自治州进行了一次大规模抽样调查。六个县共调查彝族夫妇5142 对,其中近亲婚配576 对, 近亲婚配率为11.20% ;平均近交系数达70.62×10- 4 。调查仅见四种亲缘类型,三级亲属通婚占近亲婚配的99.2% ; 舅甥女婚配占近亲婚配的0.8% ; 两代连续近亲婚配占近亲婚配的41.32% 。近亲组流产率及死产率均高于非近亲组(P< 0.05),近亲组15岁以下子女遗传病及先天畸形的患病率也明显高于非近亲组(P< 0.01)。结果表明彝族农村地区近亲婚配仍较普遍, 直接影响到人口素质, 必须予以重视
In order to understand the current situation of the marriage of the Yi ethnic cousins, a large-scale sample survey was conducted in Liangshan Yi Autonomous Prefecture in Sichuan Province in May 1994. A total of 5142 pairs of Yi couples were surveyed in the six counties, of which 576 were from relatives, with marriage rate of 11.20%; the average inbreeding coefficient was 70.62 × 10-4. Only four types of kinship were found in the survey. Three kinship relatives accounted for 99.2% of all the kinship marriages; the percentage of matrimonial matrimonial mates accounted for 0.8% of the marriage; the two generations of kinship accounted for 41.32% of the kinship marriages. The close relatives of miscarriage rate and stillbirth rate were higher than the non-close relatives (P <0.05), the close relatives of children under 15 years old genetic disease and congenital malformations were also significantly higher than non-close relatives (P <0.01). The results show that marriage in the rural areas of Yi is still relatively common, which directly affects the quality of the population and must be taken seriously