Cup-shaped column frame This shape is a tree composed of column frame, head pruning and short tip pruning. Results The branch group was cultivated and updated by pruning short branches every year, so that the basal axis of the branch group was only slightly extended every year. In this way, after years of pruning, a small cup-shaped crown with very compact structure and self-reliance was finally formed. During the growth period, the fruiting branches of the fruiting mother vine can naturally droop. The advantage of this shape is that the tree is completely self-supporting, and the branches and vines are not tied with any supports, which saves both materials and labor. The disadvantage is that the vines are too concentrated, and the color of the ears is poor.
Head pruning
Cantilever hedge frame is a tree composed of hedge frame, head pruning and long tip pruning. Results The long branches in the branch group were pruned and cultivated every year, and were updated with the prepared vines. Tie the long branches and the fruiting vines horizontally to a wire on the hedge frame, and the new branches can still droop naturally. The advantage of this shape is that the vines on the hedge frame are sparsely and evenly distributed, and the fruit ears are better colored by light. The disadvantage is that it needs some support, which increases the investment of scaffold materials and the cost of scaffold management.
Head pruning