Analysis On The Influence Of Fertility Intention On Unbalance Of Birth Sex Ratio

The implementation and improvement of family planning have controlled the populationof our country, but the unbalance of population structure problem is more and more prominent,the imbalance of birth sex ratio problem especially serious. Since80time, especially since80time metaphase, except for a few years, birth sex ratio in China obviously deviate fromnormal value, elevated abnormally, Increased year by year. Birth sex ratio imbalance willdestroy the family stability, social harmony, affect the healthy growth of young people, bringsocialist moral construction difficulties.In this paper, through the collection of historical materials, I analyzed the influence ofthe number of births, sex preference, planning objective to birth the sex ratio. The resultsshow, the number of births and birth sex ratio present complicated relationship, sex preferenceand birth sex ratio have correlation relationship, planning objective is more affected by newfertility culture, the larger influence, the lower birth sex ratio. Through the questionnaireinvestigation, I analyzed the influence of fertility intention on unbalance of birth sex ratio.The result show, the relationship of number of births, sex preference, planning goal and birthsex ratio is not only positive or negative correlation, instead, they present curve correlationproperties. In the third chapter, there is detailed introduction，in particular，the number ofbirths and birth sex ratio is exponential curve relationship, sex preference coefficient and sexratio at birth is three time curve relationship, The average number of artificial abortion andsex ratio at birth is the exponential function relationship.