There is no central trunk, the trunk is 20 ~ 30 cm high, and 3 ~ 4 main branches are distributed around it to form a crown, and the opening angle of the main branches is 40 ~ 50. There are 2 ~ 6 lateral branches on each main branch, which are arranged in the air, with an opening angle of 60 ~ 80, and many branches extend uniaxially, bearing various bearing branches on them. The crown can be controlled in the range of 1 ~ 3 meters, with great changes, and the whole crown is round. Suitable plant spacing is 2 ~ 3m× 3 ~ 4m. In greenhouse cultivation, the edge shed is short, and the natural opening shape with low fixed stems can be adopted to increase the opening angle of the main branches. Broad crown, reasonable structure, good lighting conditions, early fruiting and high yield, but many branches and dense leaves, top-heavy and poor wind resistance.

(2) Plastic method

In the first year, leave 30 ~ 40 cm for the stem. When the new buds grow to about 50 cm, cut off 20 cm to promote the growth of branches and cultivate the main branches. After drying, if the cuttings grow upright and vigorous, leave 10 cm for re-coring, and then continue to re-core. When the cutting branches do not grow vigorously, they can be kept as main branches. When the branch below it is about 60 cm long, 30-40 cm will be reserved for coring to promote the growth of secondary branches. When the growth space of the tree is low and small, its branches will be directly cultivated into fruiting branches, that is, about 15 cm will be reserved for re-coring every 30-40 cm. When the space is large, cultivate lateral branches, core every 60 cm and 40 cm, and then cultivate fruiting branches on them, keeping the extension heads of the main branches and the lateral branches, and continue to core when the extension heads of the main branches are still growing vigorously. Pull branches in autumn. When pruning in winter, the main branches are lengthened and shortened, and the rest branches are slowly put or lightly tied. If the extended branches still grow vigorously, they should be topped continuously in the growing season to accelerate the cultivation of lateral branches or fruiting branches. Control the competitive branches, re-remove the branches and twisted tips on the back of the core, and continue to pull branches and open corners. The third year is the same as the second year, and plastic surgery can be basically completed in three years. If the crown growth has basically occupied space in the first year, chemical control can be carried out in the spring of the second year to promote the formation of flower buds.

Natural happy shape