Mainly natural happy shape and y shape. A naturally open heart usually adopts three main branches, which are scattered on the trunk 40 ~ 50 cm high and extend in a straight line, and lateral branches are cultivated on both sides. The base angle of the main branch is about 45, and the waist angle is 60 ~ 70. Each main branch is equipped with 1 ~ 2 side branches. The first lateral branches are 60-80 cm away from the trunk, and the first lateral branches on the three main branches extend to the same side of each main branch in turn. The second lateral branch is about 80 ~ 100 cm away from the first lateral branch and inserted opposite to the first lateral branch. The fruiting branch group and fruiting branch are planted on the main branch and the lateral branch, and the big branch group is planted in the middle and rear part of the main branch or the base of the lateral branch with a distance of 60-80 cm; Medium-sized branches are inserted in the middle of the main lateral branches with a spacing of 30 ~ 50 cm; The small branch group is inserted in front of the main side branch or between the large and middle branch groups. The Y-shaped trunk is short, and the whole tree has only two big branches, which extend to rows. Each main branch has 1 ~ 2 side branches and various branches directly planted on the main branch. The two main branches are staggered, and the angle is kept at about 45, which is zigzag.