Abstract: The interaction between the nitrogen nutrition and the response of photosynthesis, carbon and nitrogen metabolism and growth under the elevated atmospheric CO2 was reviewed with rice served as an example plant, which is associated with nitrogen nutritional characters, the activity and amounts of photosynthetic enzymes, the regeneration of photosynthetic substrates and nitrogen nutrition. Nitrogen management in rice production system were suggested, and the further nitrogen nutrition of rice plants associated with yield and ecological aspect were discussed as well.

Key words: carbon dioxide enrichment, photosynthesis, nitrogen nutrition, paddy rice, carbon and nitrogen metabolism

摘要： 以水稻为例，从分析高等植物光合速率对大气CO2浓度升高的短期与长期反应入手，结合水稻的氮素营养特性，通过分析大气CO2浓度倍增下，水稻体内氮素营养状况与光合速率的关系，以及光合作用过程中酶的活性与总量、光合底物的再生与水稻氮素营养的关系，论述了大气CO2浓度升高对水稻体内碳氮代谢的影响。对稻田生态系统的氮素营养管理提出了建议，并从产量和生态角度对今后水稻氮素营养的研究进行了展望。

关键词: 二氧化碳倍增, 光合作用, 氮素营养, 水稻, 碳氮代谢