First, pull the branches.
Branching of fruit trees includes bending, splitting, turning, pressing, supporting and pulling, so that the angle of branches can be opened to the required angle.
After the fruit tree is pulled, the top advantage is weakened, the germination ability is improved, and the distribution of nutrients and hormones is balanced, which is beneficial to the formation of flower buds. Pulling branches can also increase the angle of branches, improve lighting conditions and improve the photosynthetic efficiency of leaves.
So how do you pull branches from the apple tree? What is the appropriate angle for pulling branches?
Second, the branches on the apple tree.
I want to ask you a question. What shape is your apple tree? Small crown sparse layer shape? Free spindle shape? Or fan-shaped happiness? I think there are many answers. Why do you ask? Because different apple trees pull branches at different angles. Therefore, the branches of apple trees have no fixed angle, and only the right ones are the best.
1, small crown sparse layer shape
An apple tree with a small crown and sparse layers has 5-6 main branches arranged in layers. There are three main branches on the first floor. Can you pull them to 60? 70 degrees. Is there 1 on the second floor? Two main branches, inserted in the middle of each main branch on the first floor, can be pulled to 50? 60 degrees. There is only one main branch on the third floor. Just climb up with scissors, don't pull the branches.
This kind of tree has few main branches and many branches, which need to be opened, which is beneficial to sufficient sunshine, stable tree potential and high yield.
2, free spindle shape
This kind of tree has no big main branches, and the whole tree is small main branches, which are evenly distributed on the trunk and arranged in gaps, regardless of levels. The length of each small main branch decreases upwards in turn, showing a spindle shape.
The opening angle of the small main branch of this tree is 80? 90 degrees is more suitable, the main branch extends uniaxial, and medium, small and short fruit branches are planted on it. Spindle-shaped trees have compact crown, good ventilation and light transmission, good apples, high quality fruit rate and easy pruning.
3. Slender spindle shape
Slender spindle-shaped apple, the trunk is higher than the free spindle, but the crown diameter is small, with many small main branches rising spirally, and the opening angle is similar to that of the free spindle, which is 85? Between 90 degrees.
4. Y type
The shape of this apple tree is similar to that of our common peach tree. There is no central trunk, but there are two big main branches, which grow on the diagonal between rows. The included angle between the two main branches can be drawn as a 50-degree Y-shape.
Among the two main branches, the upper branch group can be leveled or slightly drooped, and a small number of small fruit branches or branches are left on the back to facilitate timely branch picking.
There is also an apple tree that we don't see often, called bead curtain. I saw it in other places many years ago. Like a weeping willow, its four main branches cross happily, divided into two layers, the first layer is three, the second layer is 1, and the main branches are painted to about 80 degrees.
In short, because the apple leaves have different tree shapes, the angle of pulling branches is also different. The opening of the main branch angle can ensure the advantages of the central trunk and alleviate the growth potential of the tree, which is not only conducive to ventilation and light transmission, but also conducive to flowering and fruiting. Adjust the angle of the main branch, except pulling branches, falling branches, supporting branches, taking me and branching. After the seedlings are fixed, branches with good angles and buds can also be selected as backbone branches for cultivation, or external buds or lateral buds can be cut short. You can slightly increase the angle of the main branch, or extend in the direction of the original main branch. Later, by pulling and stretching the branches, the opening angle was 70? 80 degrees, then bow your head after the result comes out, which can increase the transparency of the upper part of the crown. At present, most apple trees adopt the method of promoting flower pruning, which has strong pertinence and timeliness. Only by seizing the favorable opportunity, taking corresponding measures and comprehensively using various methods can we achieve good results in promoting flowers.