1. vegetative growth period: on the basis of fixed stem and seedlings, the crown is mainly shaped and cultivated. In the first and second years after planting, the main branches and secondary branches are cultivated continuously, and the lateral branches are arranged, so that the tree body is compact and the branches are flourishing. Cultivate shoots 3 ~ 4 times a year, form a crown as soon as possible, and remove buds in time.
2. Growth and fruiting period: continue to cultivate the crown and bear appropriate fruits. Promote new shoots 2 ~ 3 times a year, so that the branches are evenly arranged and a compact crown is formed as soon as possible. The middle and upper parts of plants do not bear fruit or bear little fruit during the day, and pruning is mainly based on bud wiping and shoot control.
3. Full fruiting period: the height of the tree is generally controlled below 250cm, the crown is wide, the periphery is concave and convex, the branches grow healthily, the thickness of the green leaf layer should be above 100cm, and the ventilation is transparent, resulting in a three-dimensional effect. Control the intersection between rows, and the crown coverage rate is 75% ~ 85%. Pruning suitable trees, deleting secrets and keeping sparse, removing the weak and keeping strong; Cut and stay, cut outside and stay inside; Cut down more trees and plant more flowers, and cut down less trees and plant less.
4. Aging period: retract and prune, renew or prune old fruit branches, new fruit branches press against the inner chamber or lower part, keep germination, prune densely and sparsely, arrange evenly, spend more flowers and prune more, and prune weak trees moderately.
Extended data:
Orange tree, a small evergreen tree of Rutaceae, originated in China and widely distributed in the provinces south of the Yangtze River. It is about 3 meters high. Branchlets are thinner, glabrous and usually spiny. It blooms in spring and matures in February 10 ~ 10.
Orange trees are evergreen all year round, with dense branches and leaves, neat tree posture, blooming flowers in spring, and heavy yellow and yellow-green fruits in autumn and winter are extremely beautiful.
Orange trees like warm and humid climate, and their cold tolerance is slightly stronger than grapefruit, lime and sweet orange.
References:
Orange Tree-Baidu Encyclopedia