Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Environ Pollut. 2013 Aug;179:19-26. doi: 10.1016/j.envpol.2013.03.051. Epub 2013 Apr 29.
With the open-top chambers (OTCs) in situ in Yangtze River Delta, China in 2007 and 2008, the effects of elevated O₃ exposure on nutrient elements and quality of winter wheat and rice grain were investigated. Grain yield per plant of winter wheat and rice declined in both years. The N and S concentrations increased under elevated O₃ exposure in both years and C-N ratios decreased significantly. The concentrations of K, Ca, Mg, P, Mn, Cu and Zn in winter wheat and the concentrations of Mg, K, Mn and Cu in rice increased. The concentrations of protein, amino acid and lysine in winter wheat and rice increased and the concentration of amylose decreased. The increase in the nutrient concentration was less than the reduction of grain yield in both winter wheat and rice, and, hence, the absolute amount of the nutrients was reduced by elevated O₃.
2007 年和 2008 年，在中国长江三角洲设置开顶式气室（OTC），研究了臭氧升高暴露对冬小麦和水稻籽粒养分元素和品质的影响。两年中，单株冬小麦和水稻的籽粒产量均下降。在臭氧升高暴露下，冬小麦和水稻中的 N 和 S 浓度均增加，C-N 比显著降低。冬小麦中的 K、Ca、Mg、P、Mn、Cu 和 Zn 浓度以及水稻中的 Mg、K、Mn 和 Cu 浓度增加。冬小麦和水稻中的蛋白质、氨基酸和赖氨酸浓度增加，直链淀粉浓度降低。在冬小麦和水稻中，养分浓度的增加小于籽粒产量的减少，因此，臭氧升高导致养分的绝对量减少。
