Close planting peach tree pruning delayed two layers of open heart
Peach uses a delayed two-layer happy-shape tree with the following pruning steps: control of rapid expansion outside the crown, good ventilation and light transmission, late transfer between rows, full internal litchi, sufficient space utilization, and high yields.
After the fresh planting peach seedlings are fixed in the spring before germination, when the first, second and third sprouts of the buds grow to 50-60 cm, the angle is opened so that the angle is about 60 degrees, and the winter shears are cut. At the time, depending on the length of the branches, leave 40-60 cm short.
The two-year-old tree weighs in expanding the crown and cultivating a main branch. From June to July, the opening angle of the big bone trunks was eased, the buds were enriched, the branches were promoted, the long branches of strong and prosperous branches were removed, and the trees were initially cultivated into an ordinary happy shape.
In the third year, when the back branches grow to 20-30 centimeters in length, on the main branch of the more prosperous, the upright strips at a distance of 20-40 cm from the stem are cultured as stems, and the rest of the competition branches are completely removed. Under conditions of sufficient fertilizer and water, when dry stems can grow to 120-190 cm in winter, they should be selected for short cuts at 160 cm.
In the fourth year, Wangzhi, which did not germinate when the stems and stems sprouted, was flattened to 40-60 centimeters in length, leaving two or three main branches in the second layer, and the remaining branches were erased. For those who do not reach a height of 160 cm, they will continue to train for three years or so and delay the formation of a two-layered structure.
It is necessary to pay attention to the pruning of the peach tree with delayed two-layer happy shape: the trunk should not be left as early as possible; the spacing between the first and second layers should not be less than 150 cm; the second layer of the crown should be 1/3 of the first layer; the second layer should not be too large. , In order to air and light; trimming adjustment time is focused on the growing season, modeling should be carried out at the same time with the promotion of flowers, you can use soil paclobutrazol and other inhibitors to control the rapid expansion of the tree crown.
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