[2] [2] IPCC. Climate change: the physical science basis contribution of working group I to the fifth assessment report of the intergovernmental panel on climate change［R］. Cambridge: Cambridge University Press, 2013.

[10] [10] LAM S K, HAO X Y, LIN E D, et al. Effect of elevated carbon dioxide on growth and nitrogen fixation of two soybean cultivars in northern China［J］. Biology and Fertility of Soils, 2012, 48(5): 603-606.

[11] [11] WANG Y X, FREI M, SONG Q L, et al. The impact of atmospheric CO2 concentration enrichment on rice quality—a research review［J］. Acta Ecologica Sinica, 2011, 31(6): 277-282.

[12] [12] FERNANDO N, PANOZZO J, TAUSZ M, et al. Elevated CO2 alters grain quality of two bread wheat cultivars grown under different environmental conditions［J］. Agriculture, Ecosystems and Environment, 2014, 185: 24-33.

[13] [13] LI P, HAN X, ZONG Y Z, et al. Effects of free-air CO2 enrichment (FACE) on the uptake and utilization of N, P and K in Vigna radiate［J］. Agriculture, Ecosystems & Environment, 2015, 202: 120-125.

[14] [14] RASCHER U, BISKUP B, LEAKEY A D B, et al. Altered physiological function, not structure, drives increased radiation-use efficiency of soybean grown at elevated CO2［J］. Photosynthesis Research, 2010, 105(1): 15-25.

[15] [15] HAO X Y, LI P, HAN X, et al. Effects of free-air CO2 enrichment (FACE) on N, P and K uptake and utilization by soybean in northern China［J］. Agricultural and Forest Meteorology, 2016, 218: 261-266.

[16] [16] HAO X Y, GAO J, HAN X, et al. Effects of open-air elevated ［CO2］on yield quality of Glycine max［J］. Agriculture, Ecosystems & Environment, 2014, 192(2): 80-84.

[17] [17] MARTIN B, THORSTENSON Y R. Stable carbon isotope composition (δ13C), water use efficiency, and biomass productivity of Lycopersicon esculentum, Lycopersicon pennellii, and the F1 hybrid［J］. Plant Physiology, 1988, 88(1): 213-217.

[20] [20] BAHAJI A, LI J, SáNCHEZ-LóPEZ á M, et al. Starch biosynthesis, its regulation and biotechnological approaches to improve crop yields［J］. Biotechnology Advances, 2014, 32(1): 87-106.

[21] [21] XU Q Y, CHEN S Y, REN Y J, et al. Regulation of sucrose transporters and phloem loading in response to environmental cues［J］. Plant Physiology, 2018, 176(1): 930-945.

[25] [25] EVANS J R. Improving photosynthesis［J］. Plant Physiology, 2013, 162(4): 1780-1793.