Crystal sugar apple is an apple produced in Aksu. Because the sugar in its nucleus accumulates into a transparent shape, it forms a unique "rock candy heart" in the world, so it is called "rock candy heart" apple.

The temperature difference between day and night in Aksu high altitude area is large, the sunshine is abundant, and the soil is fertile, which makes the sugar content of apples high, and the sugar content is about 18 degrees, which is particularly sweet. Aksu apples are watered by glacier snow water and cultivated in sandy soil to produce "sugar-heart" red Fuji apples.

The origin of rock candy apple

Aksu means "clear water" in Uygur language and is known as "the south of the Great Wall". The rainfall here is scarce and the climate is dry, but the water system is dense and the water flow is rich, which nourishes a fat oasis; Rich in light and heat resources, the annual average total solar radiation is 130 to14/kcal, the sunshine time is 2855 to 2967 hours, the frost-free period is 205 to 2 19 days, the annual average temperature is 7℃ to 8℃, and it is cold in winter.

During the fruit growing period, there are few pests and diseases, high altitude, large temperature difference between day and night, and abundant sunshine. By using the characteristics of pollution-free glaciers and snowmelt river-Kekeya River irrigation and sand cultivation, the sugar in the apple core is piled up into a transparent shape, forming a unique "rock candy apple" in the world.

The last process to control the quality of rock candy heart is the frost period in Aksu area1early October, so the production of "rock candy heart" apple in Aksu is very regional, with an annual output of only 5,000 tons of pure fruit.