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一、我国不同时期的性比值变动情况 据我国人口统计数字显示,50年代初.新生婴儿的性比值为103,接近世界平均值。1981年,新生婴儿的性比值增加到108.47。而到1993年,新生婴儿的性比值猛然拉大到118,而且性比值在继续失调。个别地方更加严重,例如,山东省枣庄市新生婴儿性比值竟严重到144。据《中华工商时报》报道:我国农村目前男性比女性多三千多万。到本世纪末,我国农村又将多出生二千多万男性,加上目前已多出的三千万多男性,届时只农村就将有比女性多五千多万的男性人口,形成令人忧虑的“光棍”大军。 鉴于我国的性比值失调越来越严重,性比值的问题已不再是生物学上的纯理论问题,而成为严重的社会问题。
I. Changes in Sex Ratio in Different Periods in China According to China’s demographic statistics, in the early 1950s, the sex ratio of newborn infants was 103, close to the world average. In 1981, the sex ratio of newborn babies increased to 108.47. By 1993, the sex ratio of newborn babies suddenly widened to 118, and the sex ratio continued to be out of balance. For example, the proportion of newborn babies in Zaozhuang City, Shandong Province, actually went so far as 144. According to “China Business Times” reported: more than 30 million more men than women in rural China. By the end of this century, more than 20 million more males will be born in rural areas in our country and more than 30 million males have now been surpassed. By that time, there will be only a population of more than 50 million males in rural areas, which will cause worries The “bachelor” army. In view of the increasingly serious imbalance of sex ratio in our country, the problem of sex ratio is no longer a purely theoretical issue in biology, but a serious social problem.