膳食调查的目的是了解一定时间内调查对象通过膳食所摄取的热能和各种营养素的数量和质量,以评定日常摄入的营养素能否满足机体需要的程度。本文为了解目前南北方城乡膳食摄入状况,分别于1991年7月和10月对我国北方试调查点北京西城区和顺义县、南方试调查点浙江杭州和金华4个点共191户、741人进行了调查。调查采用3天住户膳食称重记帐法和3天个人膳食询问法。用SAS软件对调查结果进行 The purpose of the dietary survey is to understand the quantity and quality of the thermal energy and various nutrients consumed by the respondents over a period of time in order to assess whether the daily intake of nutrients can meet the needs of the body. In order to understand the present situation of dietary intake of urban and rural areas in North and South China, 191 households and 741 persons were investigated in north China in July 1991 and October respectively in four pilot sites of Xicheng District and Shunyi County in Beijing, Hangzhou, Zhejiang Province and Jinhua in Southern China. People conducted a survey. The survey used a 3-day household meal weighing method and a 3-day personal diet inquiry method. SAS software to the survey results