Scientific use of grape ripening agent ethephon

People in the industry all know that the ripening agent used in grapes in general is ethephon. Ethephon is a kind of plant biological stimulating hormone, which can promote the decomposition of chlorophyll, the formation of pigment, the transformation of organic acid and the formation of fruit aroma. The results showed that spraying or dipping 250-300 mg / kg ethephon on the ear at the beginning of fruit ripening could mature 6-8 days earlier and could be eaten on the fifth day after spraying. When using ethephon to ripen grapes, we should pay attention to: the concentration of ① should be suitable, the effect is not obvious when the concentration is too low, and when the concentration is higher than 500mg / kg, it is easy to lead to fruit drop. The optimum time of ② treatment was when the fruit began to mature, that is, the colored varieties began to color, and the white varieties turned yellow slightly, the treatment effect was the best. The most suitable concentration for ripening of different varieties of ③ is different, so it is necessary to go through experiments in production to find the best treatment concentration and method. ④ ethephon can promote the formation of delamination, so when ethephon is used alone, it often leads to fruit shedding, so that grape ears are not resistant to storage and transportation. in order to reduce this side effect, 10-20 mg / kg of diacetic acid or 10-15 mg / kg of 2pyrryl acetic acid or 10-15 mg / kg of 2Quin4 and 5rel T can be added when ethephon is used, which has a good effect of preventing fruit grain shedding.