How to prune peach trees

1. Fixed stem height: the trunk height of the general tree shape is 30cm to 50cm, and the specific height should be determined according to variety, topography, planting density, management mode and individual plant growth. The growth potential is strong, the soil is fertile, the branch opening degree of the variety is big, the fixed stem can be suitably higher. If the fixed stem is too low, it is difficult to cultivate, the ventilation condition is poor, the fruit quality is poor, the tree is unstable, the growth is weak, and it is not convenient to manage and harvest the tree. In addition, in the mountains and slopes, the height of the trunk and the height between the main branches should be determined according to the topography.

two。 Selection and balance of main branches: the number and orientation of main branches should be determined according to planting density, shaping mode and so on. Too much selection and retention, although the early yield is high, but after the branches are crowded, lack of light, resulting in the lower part of the main branch bald; too little selection, large amount of pruning, can not make full use of space in time, and the early yield is low.

The fixed stem height can control the configuration position of the main branch. if the position of the main branch is high, the growth potential is weak, and if the stem height is low, the growth potential is strong. Generally, the main branch in the upper part of the plastic band is often weak. If three adjacent buds (that is, three branches are connected and the shaping band is very small) are selected to cultivate three main branches, the problem of unbalanced growth will not occur, but the structure of the three main branches is not firm at the same point, and splitting may occur in the full fruit period. In order to overcome this disadvantage, we can use the combination arrangement of adjacency and proximity (that is, there is a large distance between the main branches), that is, the upper two main branches are adjacent to the lower main branch, so that the structure of the main branch is firm and the nutrient transport is smooth. If the following two main branches are adjacent to each other, and the upper main branch is higher, it is easy to appear "stuck neck", that is, the phenomenon of lower strength and upper weakness.

If you encounter the imbalance between the main branches, it is necessary to suppress the strong and help the weak, "strong branches are strong, weak branches are weak". To increase the angle of the strong branch, ease its growth, increase the pruning amount appropriately, and change the main branch to lengthen the head to make it bend and rise; the weak branch should raise the angle, stay properly, increase the amount of branches and leaves, and make it get more nutrients, from weak to strong, so that it can tend to balance after 1-2 years.

In addition, when selecting the backbone branches, we should pay attention not to use the pedicle branches, and try not to leave the southward branches when selecting the main branches, and the southward branches block more light.

3. Because of tree pruning, shaping with branches: shaping and pruning should also grasp the principles of tree pruning and shaping with branches, so that it can not only be ventilated and transparent, but also make full use of space, there is not only a solid skeleton, but also early yield, to achieve both shaping and results. Do not move the tree shape and shape for shaping, so it is necessary to be light and heavy during plastic surgery, and to change the past view of "growing the tree first and then bearing fruit", so as to achieve the goal of bearing fruit on the side of the tree.

4. Pruning method: is to shrink, cut, slow, release and other treatment of branches.