What causes the increase of sex ratio at birth?

Release date: 20 10-5-29 (1) Economic, social and cultural factors are the fundamental reasons for the high sex ratio at birth. In many rural areas, the backward productive forces make the masses pin their hopes of getting rich on having boys, which is the economic basis of son preference. In the traditional fertility culture, providing for the aged depends on sons, grandchildren and boys getting married when they grow up, which is equivalent to giving birth to one and earning one. The genealogy tablet only records men. If there is no son, the incense will be broken and so on. The fertility culture formed in the traditional agricultural society can be continued and strengthened. The realistic factors of gender inequality, in the real society, people often feel the phenomenon of gender inequality, which stimulates people to have a boy preference complex. (2) The direct cause of the high sex ratio at birth is the sex-selective induced labor and abandonment of baby girls with the popularization of fetal sex identification methods such as ultrasonic technology.