The fresh edible jujube variety'Yunmi'selected in Beijing was used as the test material,and various treatments such as ring strip-ping of the main stem,gibberellin spray,and ring stripping of the main stem+gibberellin spray were applied during the blooming period to study their effects on fruit set rate,growth,and fruit development.The results showed that the effects of three concentrations of gibberellin treatments on the fruit set showed inverse results,while the decreasing width of ring stripping could increase fruit set rate,but conversely could increase fruit weight per fruit.The treatment of trunk ring stripping+gibberellin spray not only improved fruit quality,but also increased fruit shape index,improved appearance index,and increased fruit set rate.Therefore,the treatment of 2 mm+10 mg/L ring stripping of the main stem+gibberellin spray is an effective method to improve the yield and quality of the'Yunmi'jujube fruit.
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