改革开放后汉族学生生长发育长期趋势的比较

采用文献资料、数理统计等方法,对改革开放后中国汉族学生生长发育长期趋势的变化进行比较分析,结果表明:改革开放后,中国汉族学生生长发育长期趋势仍然存在,但不同指标在二个时期的加速趋势不同.身高加速有放慢的趋势,城市学生体质量增长有继续加速的趋势,表现出体质量的增长与身高的增长不成比例,尤其突出表现在城市男生,而乡村学生体质量增长与身高的增长比例相接近.学生性成熟年龄提前的趋势仍在加速,特别是乡村女生.

The Comparative on the Secular Growth Trend of Students in Han Nationality after the Reform and Opening-up

By using the methods of document data,mathematical statistics,makes comparison research on the secular growth trend of students in Han nationality of China after the reform and opening-up.The result shows:after the reform and opening-up,students in the Han nationality of China still exist secular growth trend,but trends of accelerating of different indexs are different in two periods.Accelerating of the height has the tendency to slow down.Growth of weight has the tendency to continue accelerating in urban students,it demonstrates growth of weight out of proportion to growth of the height,especially in urban boy students.But growth of weight in the rural student is close to growth ratio of the height.The ahead trend of the age of student's sexual maturity is still accelerating,especially in the rural girl student.