A young pear tree is a tree that was 5-6 years old, has not yet produced results, or has just begun to produce results. This period of age is an important period for the formation of the canopy. The main task of pruning is to select and cultivate the backbone branches according to the tree structure of the selected tree shape, and properly cultivate the result branches so that the young pear trees can enter the fruiting stage at the same time as they rapidly expand the canopy.
The pear tree with trunk sparse shape is used. After 1-2 years of planting, the first branch is selected after the drying is completed according to the requirements, and the second branch is selected in the third year. After the second main branch is selected, one more main branch is selected each year until it is selected.
From the first year after the establishment of the stem, the long branches that are issued each year, except for those selected as the backbone branches, the other branches should be cut as little as possible or not.
After the first layer is selected, the branches occurring under the cut each year should be appropriately left as much as possible so that there is sufficient room for the selection of the first and second side branches. The distance between the layers is large, and the auxiliary branches can be appropriately selected. The first and second side branches on the main branch of the first layer are selected in the second and third years of birth, and the third and fourth side branches are selected in the fourth and fifth years of life. For each of the selected side branches, the branches with better growth, angle and orientation are selected as extension branches, and the length of the extension branches of the lateral branches can be the same as or shorter than the length of the extension branches of the main branches. But don't grow longer than the main branch.
For the long branches that occur each year, in addition to being used as backbone branches and auxiliary branches, the remaining long branches should be used as much as possible for the cultivation of the resulting branches, and the middle and short branches should be kept as much as possible. If the growth is too strong, it should be properly controlled; if the growth is weak, it can be slowed down to promote its flowering results.
Most of the pear varieties, although the germination rate is higher, the branching power is generally lower. Therefore, the amount of young pear trees is small. In order to rapidly expand the canopy and achieve early high yield, the branches other than the backbone branches should be kept as sparse as possible; the long branches that do not affect the growth of the backbone branches should be slowed down; the long branches that affect the growth of the backbone branches can be appropriately short-cut. By suppressing the height of the top, it inhibits the growth of long branches.
In order to obtain the early production of pear trees, in addition to the pruning measures such as less sparse branches, more branches, light short cuts, etc., to promote the expansion of the canopy, and more to form some medium and short branches, it should also cooperate with appropriate cultivation measures through the trees. Comprehensive management under the upper and lower trees to achieve early results and early high yields.
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