Ⅰ.Naturally growing fruit trees have closed crowns, dense branches, crossing and overlapping, empty bore, weak tree potential, poor lighting and ventilation, serious diseases and pests, low yield, and are prone to bear fruit in large and small years. Pruning fruit trees in summer and autumn can not only improve the light and promote the growth of fruit trees, but also promote the formation of flower buds and improve the accumulation of nutrients, so as to lay a good foundation for high quality and high yield in the coming year.

Ⅱ.The basic principles of fruit tree shaping and pruning are: "prune the tree and shape with the branches", "give overall consideration to the combination of length and length", "focus on light and combine light and light".

Ⅲ.Fruit tree coring: generally carried out from August to September. The method is to cut off the twig part of the new shoot and leave it 20 cm long. After the second shoot germination, cut the shoot and leave it 20 cm. Young trees can pinch off their branches with their nails. The twisting of the tip can be carried out simultaneously with the coring by twisting the semi lignified branches (20 ~ 30 cm long) in the direction opposite to their growth direction. It should be noted that the speed of twisting the tip should be slow. Pay attention to the toughness of the branch to prevent twisting and folding the branch. This method can control the overgrowth of new shoots and strengthen the accumulation of photosynthetic products in trees.

Ⅳ.Fruit tree branch bending: it is generally carried out from July to August to make the new flourishing branches grow downward or left and right under the action of external force. It can also be tied to the branches of itself or other plants to change the growth direction. It can also turn the branches into a circle, but it can not be broken.

Ⅴ.Fruit tree overgrowth treatment: girdling, ring cutting and upside down peeling peel off the phloem of the branch tip, which is called girdling. Cutting only one ring of phloem without peeling is called ring cutting. The peeled bark is upside down and then embedded in the original peeled place to bind and heal, which is called inverted sticking skin. These measures are taken for overgrown branches in the growing season. Removing the long branches and completely cutting off the long branches can not only improve the ventilation and light transmission performance of fruit trees, increase light, but also strengthen photosynthesis, reduce the useless consumption of nutrition and increase the accumulation of tree camp. Pay attention to the flat cut, no column, and avoid new branches.

Ⅵ.Root cutting of fruit trees: generally, it is carried out from August to September. The method is to take the trunk as the center, open a 50 cm deep and 20 cm wide semi enclosed ditch at 1 / 3 of the crown radius, cut off the lateral roots, cut off the broken roots, and the cut surface of the conjoined roots shall be smooth and flat without damaging the main roots of the fruit trees. The aged lateral roots and capillary roots can be removed.

Ⅶ.Fruit tree leaf removal: it is generally carried out in September. The method is to remove too dense leaves. It should be noted that the removal of leaves should not be too high in the part of fruit trees. Leaf removal can improve the light inside the canopy and fruit, promote the formation of flower buds, enhance the color of fruit, and help fruit trees enter dormancy as soon as possible.