在中小学生中，贫血虽然是一种症状，但它可以诱发多种疾患，影响他们的发育和学习。为解决我县中小学生贫血状况，１９９７年４月对城乡七所学校、共２２３２名中小学生进行了贫血状况调查。１调查对象从全县所有中小学校中随机抽取七所，再对七所学校的所有学生根据学籍... Among primary and secondary students, although anemia is a symptom, it can induce various diseases that affect their development and learning. In order to solve the primary and secondary school students in our county, anemia status, in April 1997 to seven schools in urban and rural areas, a total of 2,232 primary and secondary school students were anemic status survey. A survey of all primary and secondary schools in the county randomly selected seven, and then all the seven schools according to student enrollment ...