| In order to clarify the effects of sulfur application at different growth stages on the yield and quality of strong-gluten wheat, a field experiment was conducted during the 2019-2021 wheat growing seasons using the variety Gaoyou 2018 as material. Three treatments \[before sowing(Sb), topdressing at jointing stage(Sj) and topdressing at anthesis stage(Sa)\] with sulfur application of 60 kg·hm-2 were set up, with no-sulfur application as control to study the effect of sulfur application on the grain yield and quality of strong-gluten wheat. The results showed that compared to the control, both Sb and Sa significantly increased the thousand kernel weight(TKW) and yield of Gaoyou 2018. The average increase rate of TKW in the two growing seasons was 6.23% and 7.04%, and the average increase rate of yield was 9.20% and 5.71%, respectively. However, sulfur application had no significant effect on the number of ears and grains per spike of Gaoyou 2018. The dough formation time and stability time of the three sulfur treatments were significantly improved, with Sb and Sa better than that of Sj treatment, and Sa had the best effect, with increase rates reaching 48.78% and 32.63%, respectively. The Sa treatment also resulted in the largest increases in grain wet gluten content, Zeleny sedimentation value, protein content and gliadin/glutenin, with increase rates of 8.88%, 8.31%, 6.61% and 10.48%, respectively. In conclusion, sulfur application has a positive effect on the yield and quality of strong-gluten wheat, with the Sa being the optimal fertilization treatment under the conditions of this experiment. |
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