1, climatic reasons. Sugar-heart apples are common in high altitude areas of Aksu. The large temperature difference between day and night in Aksu, coupled with the unique melting water of snow-capped mountains in the plateau, made the apple cores pile up into a transparent shape, thus forming a unique sugar-nucleated apple.

2, physical diseases In some places, rock sugar apples actually have water heart disease. The cause of the disease is also severe calcium deficiency, which will affect soil and fruit trees. This kind of apple tastes sweet and is loved by many people. Therefore, the apples with rock candy hearts in the market are heavier.

Extended data:

Characteristics of sugar-heart apples:

1, fruit noodles. Sugar-heart apple has smooth and delicate fruit surface, and the fruit points are faintly visible. The red Fuji apple on the mainland has rough fruit surface, and it has obvious friction feeling when touched by hand!

2, the color is bright, and the color is slightly yellow. The mainland red Fuji is red and dull!

3. The pulp is delicate, slightly yellow in color, with rich chewing consequences and basically no residue. The meat on the mainland is loose, fruity and light, with insufficient water and pale meat!

4, transparent stone, commonly known as "sugar heart", is a sign that red Fuji apples are different from other places of origin!