The latest course of winter shearing techniques for walnut trees

After Frosts Descent, the leaves of walnut gradually fell, and this period was the best winter cutting time for walnut. At this time, pruning had the least effect on walnut, and the cut would not cause bleeding. So how to cut walnuts in winter? Come and have a look with the editor.

1. Control the strong momentum and retract the long mother branch

The first thing that walnut winter shears should do is to weaken the top advantage, which is the main key to the success of walnut cultivation and the main technical means to cultivate high-yield and stable-yield tree type. The growth habit of walnut is relatively unique. If the top upright branch grows to more than 3 meters in that year, if it is not stopped, it will continue to grow, resulting in a large upper branch and less lower branch, so that the backbone branch can not grow up, and the fruiting branch is obviously bald. So if you want to control the tree type, you must control the top growth, so that the horizontal growth of the plant is greater than the vertical growth.

2. Remove autumn branches before pruning and take the lead after cutting flowers

Walnut has different growth habits from other fruit trees. if its flower buds want to bear fruit, they will first germinate a new fruiting branch in autumn, and then use the terminal bud of the new fruiting branch to bear fruit. If the autumn branches are not cut off in time, the flower buds on the branches will be in the latter half of the branches. if the branches are not cut short in time, these flower buds will not have a growth advantage, they will not sprout new fruiting branches and die naturally. The half sentence means that in practice, it is not fixed at the lower part of the transition of spring and autumn, for example, if the junction of spring and autumn is a leaf bud, it can be pruned to the base until the first flower bud, where 2-3 cm above the flower bud is the pruning place.

3. The branch group should renew, remove the weak and retain the strong branch.

The weak fruiting branches of walnut are very easy to die after fruiting, so in order to protect the high yield, the fruiting branches should be renewed and rejuvenated every year, and the weak branches should be removed and retained strong during pruning. It should be noted that the training direction of the walnut fruiting branch group is not strong, there is no excessive requirement, the top and bottom can be uniform, many people asked me to remove all the branches above and below the backbone branch, this is the wrong way.

4. If you cut your head in winter, you will not be short of it in the coming year.

The tree type cultivation of walnut tree is carried out after planting and setting the trunk. Every year, the tree head should not be left intentionally when the tree is cut, and the central upright trunk should not be left. It is intended to let the trunk go up and down. When cultivating the crown, we should pay attention to the reasonable distribution of branch groups and keep the balance between the top and bottom. In the early stage of crown cultivation, do not consider how to grow higher, first of all to ensure that the horizontal growth is slightly larger than the vertical growth. If the top dominance is too long, it will make the tree grow all the way up, the lower and inner branches can not come out, and the basic branches are greatly reduced, weakening the bottom of the crown and promoting the top advantage. Such a high yield is completely impossible, and the future transformation is also a troublesome matter, so even if there is no head in the winter cut, there will be no lack of head in the coming year, and the top growth will still be very strong.

The above is the introduction of winter shearing technology of walnut trees. I hope it can help you. If you want to know more about it, please follow us.