The invention relates to a method for improving the quality of grape fruits by using a compound anti-
transpiration agent. In the period of fruit bearing, a
hyaluronic acid solution is sprayed; from the initial period of maturation in the beginning to the initial period of maturation, the compound anti-
transpiration agent is sprayed onto the surfaces of the fruits,
hyaluronic acid can form an edible covered membrane on the surface of the grape
skin, and the covered membrane maintains the local
environmental humidity of the tissue while hindering the
transpiration, thereby increasing the growthspeed of the grape fruits in the first expansion growth period, reducing the
weight loss ratio of the fruits, reducing the water
evaporation of the fruits, and enhancing the
drought resistance ability. In the initial period of maturity of grapes in the beginning, ABA mixing treatment can obviously advance and improve the expression and expression quantity of a VvCWI (
cell wall acid
invertase) generelated to
sugar accumulation and VvUFGT
gene related to
anthocyanin synthesis in the
maturation process, and finally, the content of
sugar,
anthocyanin and other important quality factors in ripe grape fruits is increased.