First, Apple's "shoulder" cracks cause heavy. In the late stages of apple growth, when the pulp cells continue to expand, if the temperature drops at that time, the peel will shrink, while the pulp cells that are still expanding will spread the pericarp and cause cracks in the peel. Apple's "shoulder," because the skin is tender, so heavy cracks.
Second, the cause of the cracks in the apple stems. Picking the bag is not timely or Apple harvesting is not timely, the cracks will increase. If the apples are pulled, they will not be harvested within 7 days after bag removal. More than 20% of apples will crack.
In addition, there was more rainfall, and the apple cracked heavily. After picking the bag, if there was dew every day and the fruit surface did not dry before 11am, the apple cracked heavily; the humidity in the ground was high, the crack in the apple was heavy; the temperature was unstable, and the crack in the apple was heavy; 7-8 In apple orchards, where the application of nitrogenous fertilizer is applied on a monthly basis, the cracks in the apples are numerous and heavy.
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