The sugar content of grape fruit is increased by light respiration inhibition

grapes belong to the high-gloss breathing type of carbon three plants, light breathing consumes almost 40% to 50% of the photolysal products. Especially in summer, the light breathing effect is greatly enhanced by the increase of temperature, which is a critical moment in the growth of fructose, which seriously affects the accumulation of photolysal products and affects the quality of grapes. Therefore, properly inhibiting the light breathing of the leaves can reduce the consumption of the leaf photolysense products and significantly increase the sugar content of the fruit. According to our experiments, the light breathing inhibitor sodium sulphate not only improves the sitting fruit rate of giant peak grapes, but also has a good effect on the quality, yield and neatness of the fruit. In order to improve the quality of the fruit, every 7-10 days after the full plant spray 300 mg / kg photorespiration inhibitor, continuous spray 2-3 times can receive significant results. When using, it should be noted that sodium sulphate can be mixed with other pesticides and fertilizers, but must not be mixed with
herbicides
used. Spraying time is suitable for 8-11 a.m. or 15-18 p.m. after dry dew on a sunny day.
If the grape sitting fruit rate can be increased, the flowering sitting fruit rate can be significantly increased by spraying 500-700 mg/kg of sodium sulphate once each time before the grape flowering l week, the first flowering and the flowering period.