Briefly describe the key points of shaping and pruning techniques of osmanthus fragrans.
Shaping and pruning: ① Bud stripping: When osmanthus fragrans germinates, the buds on the trunk and base can also germinate, so it is necessary to strip the useless buds on the lower part of the trunk in time to concentrate water and nutrition, promote the development of the upper branches and form an ideal tree shape. (2) Branch thinning: to cultivate single-stem osmanthus fragrans, we should consciously cultivate the trunk straight from the seedling, maintain a certain branch height, and cut off useless branches. Generally, the branch height of osmanthus fragrans is about 1.5 meters. (3) Short cutting: Cut off the top branches that are growing too vigorously to keep the height of osmanthus fragrans at about 3.5 meters and the crown width at 2.5-3 meters. When transplanting Osmanthus fragrans, in order to maintain a complete tree shape, it is not advisable to cut it forcefully, but only cut off dead branches, disease and insect branches, sparse overlapping branches, cross branches and thin branches, and control long branches.