The flowering and fruiting of fruit trees need to be based on branches and leaves, which also puzzles some beginners: pruning directly reduces the secondary trunk and branches of navel orange fruit trees, which is not conducive to increasing fruit hanging. This has entered a misunderstanding. Pruning navel orange trees is to improve the nutritional balance of trees and clean up the branches of pests and diseases. I prune navel orange trees like this: according to the season, I wipe off the dense and useless buds in spring, cut off the long branches, leave one or four leaves on the spring shoots, and then cut them flat. In summer, the main thing is to let the sunshine in, so that the fruit trees can better carry out photosynthesis and pesticide application, and trim them a little in autumn.

For severely aging or too closed trees, the main branches can be renewed. Generally, the main branches are sawed off at a distance of 70~ 100 cm from the base of the main branches, and the main branches are thick and short. For some old trees whose branches can still bear fruit, they should be pruned in order within 2~3 years to loosen the over-dense and weak side branches and keep most of the strong branches. The new shoots of navel orange grow evenly, so it is generally not necessary to prune them when they are young, as long as they are wiped and dried. In order to avoid indiscriminate fertilization in cultivation, effective nitrogen fertilizer 15 should be applied centrally 20 days before jointing.

Before the leaves turn green, spray fertilizer outside the roots to promote them to turn green, and control fertilization at other times. Navel orange saplings are shaped and lightly cut. The saplings are thriving and growing vigorously. They shoot in spring, summer, autumn and late autumn all year round, and their crowns expand rapidly. Therefore, when pruning young trees, we must enlarge the tree shape and try to open the branches to set the shape and dry. The technical measures are as follows.

Navel orange, formerly known as sweet orange. Alias: orange, navel orange, orange, orange. Rutaceae usually has small evergreen trees with hairless branchlets and short or no branches. Leaves elliptic or ovate, entire or inconspicuous; Petiole narrowly winged, apex related. Navel orange is an excellent citrus variety cultivated all over the world. The biological basis of navel orange pruning, the basic method and period of navel orange pruning, the pruning of navel orange young trees, the pruning of navel orange trees of different ages, the pruning of navel orange large and small trees, stable trees, flourishing trees, deciduous trees, frozen trees, transplanted trees and small old trees. This book is easy to understand.