There are many kinds of jujube trees, but according to the current cultivation mode, spindle trees can meet the needs of close planting and help to achieve early high yield. The tree has an obvious central trunk, 40~50 cm high and about 3 meters high.
There are 5-7 main branches scattered on the central trunk, and the main branches are not layered, and one is left every 20-40 cm, which is arranged in a spiral shape, and the resulting branches directly protrude on the main branches. When planting, the stem is fixed at 80 cm, and 5~7 main branches are cultivated in turn within 2~3 years. After several short cuts, the middle stem will fall to a height of 3 meters, and the length will be controlled.
Extended data:
Opening branches of jujube trees, also called girdling, aims to prevent nutrients produced by aboveground parts from being transported to the roots and improve the fruit setting rate. The opening hours are slightly different according to the habits of different varieties.
For varieties with heavy falling flowers and difficult fruit setting, the best time to open a nail is the early flowering stage, which can effectively promote the fruit setting of flowers. Varieties with heavy fruit drop should open their nails after flowering. The opening position can be 25 cm above the ground, and then the opening height will move up year by year.
The girdling width is about 0.5 cm. When nailing, the incision should be smooth, so as not to hurt the xylem. Only the tough cortex is peeled off, leaving the cambium. The wound of girdling must be connected into a closed ring, otherwise the effect is not good.