How to trim the walnut tree?

How to trim the walnut tree? The pruning methods of walnut trees are generally different with the increase of tree age. Please refer to the following for details: 1. Pruning of young trees: it should vary according to the growth and development characteristics of different varieties, mainly cutting off weak branches, cross branches, overlapping branches, parallel branches and diseased branches, in order to cultivate backbone branches and fruiting branches at all levels. The specific methods are as follows: control the secondary branch, control the growing branch, deal with the exuberant nutrient branch, remove the dense branch and deal with the inferior branch. 2. Adult tree pruning: for walnut trees that have just entered adulthood, the tree shape has been basically formed and the yield has gradually increased. The main pruning tasks of walnut trees during this period are to continue to cultivate main and lateral branches, make full use of the early fruit of auxiliary branches, actively cultivate fruiting branches and expand the fruiting position as much as possible. The pruning principle is to remove the strong and retain the weak, first put and then shrink, the combination of expansion and contraction to prevent the result part from moving outward. 3. Pruning of trees in full fruit period: in full fruit period, most of the large walnut trees are close to or already closed, the amount of outer branches gradually increases, and most of them become fruiting branches, and due to poor light, some of the branchlets are dry, and bald zones appear at the back of the main branches. the fruit part moves outward, and it is easy to produce fruit every other year. Therefore, the main task of pruning in this period is to adjust the relationship between vegetative growth and reproductive growth, constantly improve the ventilation and light transmission conditions in the crown, and constantly renew fruiting branches, so as to achieve the purpose of high and stable yield. 4. Pruning of senescent trees: walnut trees enter the aging period, the outer branches droop and produce a large number of "scorched shoots". At the same time, a large number of overgrown branches sprout, the phenomenon of natural regeneration occurs, and the yield decreases significantly. In order to prolong the life of the results, renewal and rejuvenation can be carried out. The specific pruning method: ① trunk update (big update) saws off all the main branches to make them re-branch and form the main branch. ② main branch renewal (medium renewal) retracts in the appropriate part of the main branch to form new lateral branches. ③ lateral branch renewal (small renewal) retracts the primary lateral branch in the appropriate position to form a new secondary lateral branch. Its advantages are: the formation of new crown and the increase of yield are rapid. Click to get more hickory planting techniques click to get more fruit planting techniques