There are two major technical keys in shaping the trunk-shaped fruit trees. The first is to maintain the absolute advantages of the dry trunks. The dry trunks must not be weak; the second is that the thickness of the horizontal branches and stems must be opened and the horizontal branches must not be thick. . In these two key areas, any one problem will lead to plastic failure.

The survey found that such a garden, planted at a density of 3 meters and 1 meter, the species is double dwarf Fuji, two years old, this garden fruit trees dry very weak. Some have become flowers in the upper part. To analyze the reasons, there may be the following. 1. The fertilizer and water conditions are poor, and the soil cultivation system is unreasonable. Originally located in droughts and floods with less rainfall, the orchards used clear tillage systems, met dry seasons, and did not adopt watering or effective water conservation measures. Organic fertilizers were insufficiently applied. Fruit tree growth was small, and some trees were weak. 2. There is no selection of high-quality seedlings to build the garden. Some seedlings are very weak when planted. 3. In the first year of winter, when the seedlings were weak or virgin, they were not dried. Several weak buds that were concentrated at the top of the second year germinated and were not dealt with in time, resulting in horizontal branches. Grow. 4. Some seedlings appear dry and no props have been erected. 5. Although some trees have been dry, the competition branches under the cuts have not been dealt with timely or improperly, resulting in excessive competition. Later, although the branches were drawn, they were still difficult to control and affected the dryness. 6. In the spring of the second year after planting, a lot of sprouting occurred when the seedlings were weak, resulting in too weak stems. 7. Lateral branching branches are not timely or in place and affect the dryness.

For this orchard, it is urgent to take the following measures to remedy: 1. Strengthen the management of fertilizer and water, especially in the case of continuous drought in winter and spring, if necessary, watering, with top dressing, watering can be covered with grass or mulch covered. If you can't water it, you can only wait for it to rain and cover it after it rains. For marmots, areas with an annual rainfall below 600 mm should not be grassed. Grass should be covered, and straw such as corn and wheat can be used to cover fruit tree trays. Fundamentally change the soil farming system. 2. During winter pruning, the main extension head is cut short at full shoots depending on the situation. Handle the second bud under the clipping (competitive branch) in time. For other germinating branches treated at a length of 60-80 cm, they are transferred from the base and pulled downward. 3. According to the situation, remove some of the excessive lateral branches, continue to pull the branches for the lateral branches that do not pull in position, and do the motive force to promote flower treatment. 4. Don't hesitate to take care of the branches. For those who are too large and too thick, we will remove them. 5. For those who are dry, back straight with bamboo sticks or sticks. 6. For flower buds formed on the top of the tree or in the stem, remove and avoid sprouting in the stem.

There is another garden like this, 3-1 meters Red Fuji, dwarf, 5 years old, the whole tree has more than 10 horizontal branches, horizontal branches thicker, reaching one-third to one-third of the trunk, some also There are lateral branches, because the spacing is only 1 meter, some lateral branches take a variety of control methods, resulting in a strong base, very weak tip, a length of 80 cm to 1 m, a large tree with many small branches, plastic failure.

The reason for this phenomenon is that the trunk shape is not fully understood, and some management methods using traditional evacuation layered fruit trees are also used to manage the trunk shape, the horizontal branches are too thick, and the middle and dry thicknesses are not pulled apart. We say that the main branches are transverse branches. The coarseness of Hegan must be opened to ensure strong stems and small and multi-lateral branches. Generally, the ratio of coarse to medium stems to horizontal stems is 4-7 to 1 and this standard cannot be met. Plastic surgery will inevitably fail. Therefore, we saw that some people in the first year of winter in the first year of plastic surgery simply remove all the horizontal branches of the pumping, let the stem dry for a year, and then take the branches of the second year to stay as horizontal branches. Pulling out the ratio of thickness is the reason.

For the above-mentioned orchard, the fruit is just beginning to be reformed, and the existing too-thick transverse branches cannot be left at all, and can only be gradually removed in 3-5 years, and then the fine horizontal branches can be cultivated. Of course, for many trunk-shaped orchards, there are more or less horizontal branches that are too thick. In the management, only a little attention can be given to them.

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