The period and position of opening armour

The suitable period for nail opening of jujube is in full bloom, and the trunk of adult fruiting tree is suitable for its low position, well-developed phloem tissue, easy peeling and quick wound healing. The phloem tissue of the main branch is thin, the operation is inconvenient, and the wound healing is slow. In general, the diameter of the trunk is less than 10 cm, and the backbone branches have not yet been formed, so it is not suitable to open armour, but under the condition of high fertilizer and strong water, some open armour on the trunk or main branches of densely planted high-yield trees. At the same time of high yield, the crown develops well.