JIA-2018-09

1982 TAO Zhi-qiang et al. Journal of Integrative Agriculture 2018, 17(9): 1979–1990 e a b d g c d f 30 35 40 45 50 55 60 65 N-Zn0 N-Zn15 N-Zn30 N-Zn45 H-Zn0 H-Zn15 H-Zn30 H-Zn45 N-Zn0 N-Zn15 N-Zn30 N-Zn45 H-Zn0 H-Zn15 H-Zn30 H-Zn45 N-Zn0 N-Zn15 N-Zn30 N-Zn45 H-Zn0 H-Zn15 H-Zn30 H-Zn45 N-Zn0 N-Zn15 N-Zn30 N-Zn45 H-Zn0 H-Zn15 H-Zn30 H-Zn45 Grain yield (g per pot) Grain yield (g per pot) Grain yield (g per pot) Grain yield (g per pot) GY2018-2016 c a bc c f c d e 30 35 40 45 50 55 60 65 ZM8-2016 A C e a b d g c d f 30 35 40 45 50 55 60 65 GY2018-2017 c a bc c f c d e 30 35 40 45 50 55 60 65 ZM8-2017 B D Fig. 1 Effect of zinc fertilizer, high temperature stress (H), and no-stress (N) on grain yield from replicate experiments in 2016 and 2017 in Gaoyou 2018 (GY2018, A and B) and Zhongmai 8 (ZM8, C and D). Zn0, Zn15, Zn30, and Zn45 indicate the four levels of zinc fertilizer treatments, 0, 15, 30, and 45 mg Zn kg –1 soil, respectively. Bars represent standard deviations (SD). Letters mean significant differences at P <0.05. e a b d g c d f 30 35 40 45 50 55 Weight per grain (mg) GY2018-2016 c a bc c f c d e 30 35 40 45 50 55 Weight per grain (mg) ZM8-2016 A C e a b d g c d f 30 35 40 45 50 55 Weight per grain (mg) GY2018-2017 c a bc c f c d e 30 35 40 45 50 55 Weight per grain (mg) ZM8-2017 B D N-Zn0 N-Zn15 N-Zn30 N-Zn45 H-Zn0 H-Zn15 H-Zn30 H-Zn45 N-Zn0 N-Zn15 N-Zn30 N-Zn45 H-Zn0 H-Zn15 H-Zn30 H-Zn45 N-Zn0 N-Zn15 N-Zn30 N-Zn45 H-Zn0 H-Zn15 H-Zn30 H-Zn45 N-Zn0 N-Zn15 N-Zn30 N-Zn45 H-Zn0 H-Zn15 H-Zn30 H-Zn45 Fig. 2 Effect of zinc fertilizer additions (Zn0–45 mean 0, 15, 30, and 45 mg Zn kg –1 soil, respectively) and high temperature stress (H) or no-stress (N) on grain weight from replicate experiments in 2016 and 2017 in Gaoyou 2018 (GY2018, A and B) and Zhongmai 8 (ZM8, C and D). Bars represent standard deviations (SD). Letters mean significant differences at P <0.05.