出生性别比偏高的技术性因素

Technical Factor of the Higher Sexual Ratio at Birth

近二十多年来,各种产前胎儿性别鉴定技术的不断普及为选择性人工流产、引产提供了技术上的可能。在影响我国出生性别比偏高的诸因素中,非法的胎儿性别鉴定及选择性生育是其直接原因,主要表现为一胎出生性别比基本正常、二胎及以上出生性别比偏高。

In the latest twenties years, the uninterrupted popularization of the antenatal fetal gender authentication techniques has provided the likelihood for the selective induced abortion. In the factors acting on the higher birth sex ratio, the lawless fetal gender authentication and the selective procreation is its efficient amse, which mostly behaves the natural firstborn birth gender ratio and the higher second-born or the added birth gender ratio.