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通过对747例孕妇膳食情况的调查，了解孕妇在不同季节各种营养素的摄入水平及达到RDA值的状况。结果显示不同季节孕妇的能量分配基本符合中国营养学会推荐的比例，除钙、铁、锌、核黄素的平均摄入量只达到RDA值的60％左右外，其它营养素的平均摄人量均达到RDA值的90％左右，但多种营养素的摄入量存在显著的季节差异（P＜O．01），且各种营养素摄人未达到RDA值的人数在每个季节中都占有相当的比例。
Through the investigation of 747 cases of pregnant women to understand the pregnant women in different seasons of various nutrients intake and reach the status of RDA values. The results showed that the energy distribution of pregnant women in different seasons basically conformed to the proportion recommended by the Chinese Nutrition Society. The average intake of other nutrients except calcium, iron, zinc and riboflavin reached about 60% of RDA Reaching about 90% of the RDA value, but there was a significant seasonal difference in the intake of various nutrients (P <0.01) and the number of people who did not reach the RDA value for each nutrient accounted for a considerable proportion of each season proportion.