Winter pruning is the result of adjusting trunk, balancing trees, adjusting dimple growth and flowering early. Pruning in winter can adjust the contradiction between vegetative growth and reproductive growth, and make the growth of trees develop in the direction of producing flowers and fruits and high-quality fruits. After pruning in winter, the trees and orchards are ventilated and permeable, and nutrients are concentrated on the fruiting branches, so that the trees are tall and firm, and the buds are full, so as to achieve the purpose of bumper harvest or low consumption.
"Cut off seven thirds", in fact, the pruning of apple trees is not mysterious. By pruning, you can "make the big branches catchy and the small branches lively". You can see the light on the branches and accumulate more nutrients.
When pruning apple trees of different ages, the choice of trees should be pruned according to the age of the trees. Finally, when the mushroom comes out, it is very comfortable to leave 4 ~ 5 small test tubes of base paper. This kind of tree is ventilated and transparent, has a large light receiving area, fully absorbs sunlight, is firm and covered with presbyopia, and can create high economic effects.
Winter pruning of young apple trees 1 ~ 2: the pruning amount should be light, mainly ignoring the competitive branches of long branches, which are as short as 40 cm. The competitive branch of extending the remaining stock price in the winter of 2 years old has also been ignored, maintaining uniaxial expansion. It is helpful to keep more branches in the flowing season to expand the crown, and uniaxial spray can bloom quickly.
3-4 young trees are properly pruned, and the result is the same as that of long trees. Three-year-old trees can blossom and bear fruit, pull branches, carve new buds and remove too dense weak crowns. The Zhongyan branch continued to be light and short, the competitive branch was small, and the remaining stock price kept expanding uniaxial, neglecting to return to Wangjiachi. Four-year-old trees should be managed when they are cut down in winter. It is advisable to have no more than four branches of a tree, with the middle branch extending and the other branches extending on a single axis. The back is too weak, the pests and diseases are neglected, and the fruiting branches on both sides should be cultivated.
Apple trees are 5-6 years old and enter the fruiting period. Ignore the low main branches and dense and thick main branches, make the tree well ventilated and help to blossom and bear fruit. At the same time, the tree head can be slightly contracted, and the main branches can be extended without crossing branches. The main branch continues to cultivate two fruiting branches, the back branch, the back branch and the back branch.