Effect of Potassium Sulfate on Fruit Quality of 'Summer Black'

摘要

By applying different amounts of potassium sulfate during the coloring period of 'Summer Black', the amount of potassium sulfate applied during the coloring period of 'Summer Black' fruit can form the best internal and external quality. The results showed that potassium0.14kg sulfate applied to every grape tree in the early and late stages of fruit coloring had the best effect on the formation of fruit quality in and out of 'Summer Black'. The single grain weight, total soluble solids (TSS) and total sugars were 10%, 7.66% and 17.5% higher than those of CK, respectively, and the titratable acidity was 29.14% lower than that of CK.