利用稻田FACE（Free Air CO2 Enrichment）系统平台，以武运粳23为供试材料，设置裂区试验，研究不同肥料处理下大气CO2浓度升高对常规粳稻产量性状和营养品质的影响。主区为CO2浓度，设置环境CO2浓度（Ambient）和高CO2浓度（增200 μmol/mol）2个水平；裂区为施肥量，设置常规施肥和不施肥2个水平。结果表明，与Ambient相比，高CO2浓度环境下武运粳23籽粒产量略增，但未达显著水平；与常规施肥处理相比，不施肥处理显著减产（-34.0%），这主要是有效穗数大幅减少所致。大气CO2浓度升高使稻米蛋白质、K、P和S浓度显著下降，分别下降6.6%、6.7%、10.5%和11.7%，而Fe浓度显著上升（+12.6%）。与常规施肥相比，不施肥使稻米蛋白质、K、P、S、Mn浓度显著下降（最大降幅为26.1%），但植酸浓度显著增加（7.4%）。从单位土地面积上收获稻米营养组分的累积量看，大气CO2浓度升高对稻米营养组分累积量无显著影响（Ca除外），但不施肥处理使稻米除Ca外所有测定指标的累积量均显著下降（最大降幅达51.3%）。方差分析表明，CO2与肥料处理对稻米K、Mg、P、S、Zn、Fe浓度和Fe含量均有不同程度的交互作用。以上数据表明，高CO2浓度环境下武运粳23产量略有增加，但稻米矿质元素浓度呈一致下降趋势（除Cu、Fe外）；不施肥使籽粒产量和元素累积量均大幅下降，但植酸浓度显著增加；CO2与肥料处理对部分稻米矿质元素浓度和累积量有显著的交互作用。

Elevated atmospheric carbon dioxide（CO2） concentration may alter mineral nutrition levels in grains of rice, but it is not clear whether this change is affected by fertilization. In order to understand how fertilizer level may affect rice response to elevated CO2 concentration in the atmosphere, a two-factor experiment was conducted in a Free Air CO2 Enrichment（FACE） platform located in Jiangdu, China. A japonica rice cultivar Wuyungeng 23 was grown under two levels of CO2 concentration, ambient and elevated CO2 concentration（200 μmol/mol higher than ambient, FACE）, in combination with two fertilization treatments （common and null）. At plant maturity, the yield and nutritional quality of rice grains were determined. The results showed that the yield increased by elevated CO2 concentration was not significant. Null fertilizer significantly reduced the yield （-34%）, mainly due to the substantial decrease in the number of panicles per square meter. The protein concentration in brown rice significantly decreased by 6.6% under elevated CO2 concentration, and significantly decreased by 14.3% under null fertilizer conditions. The phytate concentration in rice grains was not changed by elevated CO2 concentration, but significantly increased by 7.4% under null fertilizer conditions. Elevated CO2 concentration significantly decreased the concentration of K （-6.7%）, P （-10.5%） and S（-11.7%）. The CO2 effects on the concentrations of Ca, Mg, Cu, Zn, Mn, and B were not significant, but significantly increased the Fe concentration （+12.6%）. Without fertilizer application, the concentrations of K, P, S and Mn were significantly decreased （up to -26.1%）. Elevated CO2 concentration had no significant effect on nutrition content per unit area in rice grains （except Ca）, but null fertilizer application significantly decreased the content of protein, phytate, K, Mg, P, S, Cu, Zn, Fe, Mn and B （up to -51.3%）. The ANOVA results indicated CO2 by fertilizer interactions on the concentrations of K, Mg, P, S, Zn, Fe and Fe content. The above data showed that the yield of Wuyungeng 23 increased slightly by CO2 fumigation throughout the growing season, but the concentrations of most of elements in rice grains showed a trend of decrease （except Cu and Fe）. Without fertilizer application, grain yield and element accumulation decreased significantly, but phytate concentration increased. The interactions between CO2 and fertilizer treatment on the concentration of K, Mg, P, Fe and Fe content were significant.