Effects of Calcium Treatments on Quality of Xiahei Grape During Ripening and Storage Property

Three-year-old Xiahei were used in studying for the effects of three different calcium fertilizers on the quality and storage property of the grapes.The results showed that applying calcium fertilizers increased the content of soluble solids, total sugar and vitamin C in the fruits significantly while decreased the fruit acidity;the duration of the fruit storage was prolonged.Comparing three fertilizers, spraying fluid fertilizer showed the best effects.By the end of the experiment date (August 13th) , the texture of fruit in hardness, the content of soluble solids, total sugar and vitamin C of the fruits from liquid calcium treatment were increased comparatively to those in the contrast for 9.25%, 19.14%, 20.70%and 16.49, respectively, with 20.99%reduction in acidity and 12.02%increase in solid acid ratio of treated fruits.The results showed that the treatment improved the fruit quality obviously.