中文摘要：

农作物品质受农作物遗传发育特征和环境因素的双重影响。在相似的遗传背景条件下，CO2浓度持续升高影响农作物中碳水化合物合成、有益和有害元素吸收的权重逐渐加大，从而引发所谓的“隐形饥饿”和农产品卫生品质下降。本文在回顾国内外有关CO2浓度升高影响农作物中碳水化和物合成、有益和有害成分吸收研究的基础上，结合本团队近年的研究结果，提出：随着产地环境污染由局部向整体扩延，CO2浓度持续升高对农作物卫生品质的潜在影响不断加剧，包括增加或减少农作物对有毒有害物质的吸收；强化农作物对土壤中有益或有害物质的非均衡吸收等。本文还对比了目前国内外CO2浓度升高对农作物品质影响研究的常用手段与方法，并对相关研究结果的差异进行了分析，着重指出这一研究方向今后工作的重点。

英文摘要：

Crop quality is mainly dependent upon two factors： crop phylogenetic characteristics and environmental factors. Under similar genetic background, continuous atmospheric CO2 rise will have an increasing impact on synthesis of carbohydrates and uptake of useful or harmful elements by crops, leading to so-called ＂hidden hunger＂ and degradation of crop quality. On the basis of reviewing and summarizing the state of the art in this field, this paper suggests： with farmland contamination being from the local to the overall expansion, the potential impact of elevated CO2 on crop quality is increasing, including increase or reduction in uptake of hazardous materials by crops; enhancement of non-uniform absorption of beneficial or harmful substances. In addition, the present paper also reviews the means and methods presently used for investigation of the impact of elevated CO2 on crop quality, and compares the differences resulting from various means and methods. Key research areas and future directions were proposed as follows： （ 1 ）Breakthrough in study facilities. Since continuous changes in atmospheric composition near the surface of the earth caused by human activities is a slow process, all the test systems that have been designed, including closed growth chamber, soil-crop-atmospheric testing units, temperature gradient growth chamber, open-top chamber and Free Air Carbon Enrichment Facilities（FACE）, are difficult to accurately simulate the continuing but slow changes in CO2 concentration. There is a need to design better simplified systems that are more closed to re- alistic changes in CO2 concentration in the future. （2）Application of new study methods and analytical techniques. Application of innovative methods, such as stable isotope tracing, proteomics, metabolomics, as well as quantitative trait loci （quantitative trait locus, QTL）, makes us feasible to investigate effect of elevated CO2 on crop quality, including mechanisms by which beneficial or harmful substances synthesize. ?