Effects of ZnO NPs application on winter wheat growth and grain quality in a potentially zinc-deficient area of the Loess Plateau, China SUN Hong-da1,2, ZHONG Min-zheng2, ZHANG Teng3, ZHAI Bing-nian2, WANG Zhao-hui2, MAO Hui1,2*

of the Loess Plateau, China SUN Hong-da1,2, ZHONG Min-zheng2, ZHANG Teng3, ZHAI Bing-nian2, WANG Zhao-hui2, MAO Hui1,2* (1.College of Resources and Environmental Science, Northwest A&F University, Yangling 712100, China; 2.Key Laboratory of Plant Nutri⁃ tion and the Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, China; 3.College of Resources and Environ⁃ mental Sciences, Nanjing Agricultural University, Nanjing 210095, China) Abstract:A two-season field trial was conducted in a potentially zinc-deficient area of the Loess Plateau, which focused on the effect of zinc oxide nanoparticle(ZnO NPs)application on the growth and grain quality of winter wheat. Five treatments, including CK(blank), FZn (foliar application of ZnSO4 solution), SZnO(soil application of ZnO NPs), FZnO(foliar application of ZnO NPs), and SFZnO(soil and foli⁃ ar combined application of ZnO NPs)were applied. During the two-season field trials, all treatments appeared to show no differences to wheat grain yields or qualities(in terms of starch, soluble sugar, or gluten content). Treatment with ZnO NPs increased grain Zn content sig⁃ nificantly, compared with CK, in both growing seasons. Moreover, in comparison with FZn treatment, FZnO and SFZnO treatments in⁃ 2019,38(9): 2041-2048 2019年9月 农 业 环 境 科 学 学 报 Journal of Agro⁃Environment Science