Saplings are cut and dried to a height of 100 cm. There are 8 to 10 full shoots under the cut, and more than 8 strong branches can be sprouted. In the first year of winter shearing, the first bud branch under the clipper grows robustly, can be cultivated into a center stem, and is cut short from a full bud at the middle, and the clipping length is about 50 centimeters; the following three directions are selected and the growth is robust. Branches, short cut, cut length 30 to 40 cm; other branches, remove strong branches, thin branches, mean trees will be long. In the second year of pruning, the first budding branch in the center grows robustly and continues to be short. The short length is 50 centimeters. The strong branch with small angle is eliminated and the other branches are long and long. In the third year of pruning, the center selected two main branches of the second layer for short cuts, and the other branches were pruned for the same year. In the fourth year of pruning, the central dry extension head and the main branches at various levels need to be extended for a long time, but the competition branches, erect and strong branches, and dense branches need to be removed, and the weak branches and drooping branches that have already been retracted must be retracted.
In the fruit-bearing period, the medium-density non-nuclear black jujube tree is cultivated into the full fruit period in the fifth year. During this period, the culture medium of the tree structure is completed, the tree vigor is eased, and the angles of the branches at all levels are more open, resulting in drooping branches. The growth of inner twigs is weak and the results are sparse. The phenomenon of wilting begins to occur. The pruning task at this time is to remove the dense and large branch groups on the periphery and the upper part, improve the illumination of the internal condyle, promote the germination of the inward buds, and eliminate the weak prolapse branches and retract the long branches.
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