In the process of planting fruit trees, many fruit farmers have found some problems. Many of the fruit trees have no branches in the middle and lower parts of the backbone branches, or there are few branches, showing a long bare belt. Some old farmers call this phenomenon It is the "light leg phenomenon". This is a phenomenon that often occurs in the management of fruit trees. After the "light leg phenomenon" occurs in fruit trees, the result is distributed in the periphery due to the inner stenosis. From the surface, although the spring is full of trees, the autumn is full of fruit, but it is not High yields will have a greater impact on the yield and quality of fruit trees. So what is the cause of the fruit tree "light legs"? How to remedy?
Causes and remedies for the "light legs" of fruit trees
First, the reason for the fruit tree "light legs"
1, pruning is not scientific
Mainly excessive cut off branches or branches, too heavy to stay weak, shrinking too heavy, plus the inner light is inherently poor, until the buds on the branches can not grow out, causing the inner lychee to die, forming "Great light legs."
2, the twigs are slowly released
Some fruit farmers hope that the fruit trees will get results early, and then slowly release the twigs in a row without being updated in time, resulting in "small light legs." The slow-moving twigs are easy to flower, but the years are slow, the branches are placed, in order to achieve the flowering results, only the immediate output, and finally the branches are weak or even dead, and even the updated parts are difficult to find, resulting in the branch group "small light legs ".
3, artificial damage shoots
Artificial damage to the shoot growth period can also cause "light legs." For example, when trimming a taller fruit tree, climbing into the canopy for trimming will cause damage to the shoot buds on the litchi under the foot, and the shoots will be knocked or bruised when the body passes, so that the backbone is above It is difficult for the shoot buds to form branches, resulting in "light legs." In addition, letting go, let the fruit trees grow wildly, will also lead to "light legs."
Causes and remedies for the "light legs" of fruit trees
Second, the fruit tree "light legs" remedy
1, ring saw scratches, stimulate the pumping
When the fruit tree is close to the germination, on the light leg section of the main branch, the side branch, the auxiliary branch and the center branch to be cultivated, the wound is sawn horizontally with a saw for 15-20 cm, and the wound grows into a branch of the branch. One of them is suitable for deep xylem to stimulate the buds to sprout branches. In addition, ring peeling and promoting branching are also one of the better measures.
2, shrinking the opening angle, expanding the crown
When there are many large branches and small angles, for the backbone branches and auxiliary branches that are dry to the center, depending on the density and the location of the branches, according to the standard tree-shaped tree structure, the permanent backbone branches are selected and then removed. The extra large branches without space extension, retracting the extra large branches with small space development, let them grow into large or medium-sized result branches. Use the support, pull, back, fall and other methods to open the main branch angle, expand the crown, increase the crown, and create the necessary space and illumination for the inner center and the "light legs".
3, grafting empty, enriching guilt
Grafting new branches from other trees on the old branches of the light legs to achieve the purpose of supplementing the branches, restoring the branches, and early results.
4, open the top window, open the light path
The center is too high, too many branches, the canopy is closed, and the ventilation and poor light transmission are the main reasons for the internal and external branches to die, forming the inner stenosis and the main branches. Therefore, if the height of the tree is more than 4 meters and the crown is more than 5 meters, the winter shear should be selected at a height of 3.5 meters to select a strong windy branch for the "top wind branch", from the top "falling happy", remove the top cover, and Appropriate removal or retraction of the dense branches of the upper, middle and lower parts, and transformation into auxiliary branches to open the "window", let the sun and the breeze enter the inner sac, so as to meet the needs of the inner and lower branches for illumination.
Causes and remedies for the "light legs" of fruit trees
The above is the reason and remedial measures of the fruit tree "light legs". The phenomenon of fruit trees "light legs" is easy to form the inner and outer dense fruit trees, the result branches are weak, the result parts are moved outward, the nutrients are inefficient consumption, the fruit is small, the quality is poor, and the yield is low. And other issues. Therefore, fruit farmers should pay attention to it, master the above measures, and promptly remedy.
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