为了了解本市经济富裕家庭儿童营养状况并为其设计合理膳食提供科学依据，我们于1995年3月对铁路第一小学9～12岁的小李生进行膳食调查和体格营养状况调查。1内容和方法1．1调查对象整群抽取铁一小3～5年级9～12岁健康）L童125人，其中男生62人，女生63人。1．2调查项目和方法 In order to understand the nutritional status of children from economically affluent families in this city and provide a scientific basis for designing a reasonable diet, we conducted a dietary survey and physical nutrition survey on Xiaoli students aged 9 to 12 years at First Primary School of Railways in March 1995. 1 Content and methods 1.1 The survey population of iron a small 3-5 years of age 9 to 12 years old healthy) L children 125 people, including 62 boys and 63 girls. 1.2 Investigation items and methods