Teach you how to determine the best harvest time for apples

Under normal climatic conditions, the growth period of apple fruit generally has a relatively stable period of growth and development. Generally, early-maturing varieties mature at 60 ~ 100 days after full bloom, middle-maturing varieties are 100 ~ 140 days, middle-and late-maturing varieties are 140 ~ 160 days, and late-maturing varieties are 160 ~ 190 days. In order to facilitate fruit growers to correctly understand and harvest at the right time, the introduction is as follows: first, pericarp color: most apple varieties have regular changes in pericarp color during development, that is, the peel background color gradually changes from dark to light green or yellow. Some coloring varieties are often painted earlier, but the peel background color is still green, and only when the peel background color changes from green to yellow is the performance of fruit ripening. Second, fruit stalk: when the fruit is really ripe, a separate layer is formed between the base of the fruit stalk and the fruit branch, and the fruit is slightly subjected to external force. It will fall off. Third, seed color: in the process of fruit development, seeds have a law of gradual browning. Cut open the fruit, and if the seed turns brown, it means it is ripe. Fourth, fruit firmness: with the fruit ripening, the pulp becomes softer, the sugar content increases, the firmness decreases gradually, and the fruit firmness is relatively stable when the fruit is ripe. Fifth, climate and market supply and demand in that year: if there are natural disasters, manpower should be organized to rush to harvest in advance. According to the market situation, in order to obtain better economic benefits, it can be picked early or late. Sixth, if it is bagging to remove the fruit bag, turn the fruit, pick leaves, spread reflective film and other color promotion measures, so that the fruit color is all colored into pink, it can be picked, this is the best picking time for commodity color, but too heavy coloring is not welcomed by the market.