The occurrence of floating skin symptoms is related to the growth and aging of skin white cortex cells. In the process of coloring and ripening, if the fruit epidermis is wet by rain, the oil cell tissue absorbs water, the epidermis expands and expands, and the white cortex tissue can't bear the pressure, so it cracks and collapses, and the epidermis floats.

1. Occurrence characteristics of citrus floating fruit 2 1 13

There are many factors that cause the floating skin of citrus. Such as weather factors, nutritional status, tree conditions, storage and other aspects will have an impact on it.

1、

Related to varieties and strains

Floating fruit mainly occurs in the late stage of fruit ripening, especially in citrus fruits such as Ponkan, Ehime, Chunjian and Ignorant Fire, which are easy to peel. 526 1 On the contrary, sweet oranges, grapefruit and lemons with hard skins are not easy to appear. Usually, there are fewer floating fruits in early-maturing strains and more floating fruits in middle-late maturity.

2. It is related to the size of the fruit.

The occurrence degree of floating fruit is closely related to its fruit size 4 102. The bigger the fruit, the more serious the floating fruit is.

3. This is related to the situation of trees.

Fruits that bear less fruit on strong and prosperous trees and young trees bear less fruit on young trees. The fruit at the top of the crown, the fruit in the sky and the fruit with thick stems are mostly thick-skinned fruits because of good nutritional conditions, which are easy to float.

4. Related to fertilization 1653.

Too late application of strong fruit fertilizer and too much nitrogen will not only affect the coloring and ripening of fruit, but also promote the secondary hypertrophy of fruit and the occurrence of floating skin.