Winter is the dormant period of apple trees. The focus of orchard management is winter shearing, combined with winter cutting to remove diseased branches and larvae, and scrape off rough and old bark to reduce or eliminate overwintering pests. First, observe: 1. Observe the characteristics of varieties. 2. Observe the strength of the tree. 3. Observe flower buds. 4. Observe the trimming reaction. Second, pruning: 1. Pruning of young trees: In accordance with the principle of "light shear, shaping and results, and promoting early results". (1) Sparse layer sparse: one layer of main branch leaves 3~4, choose to stay and clean up the dense branches that affect the growth of the backbone, clean up 1-2 each year, and strive to clean up after 2 years. (2) Free-spindle shape: 3 to 4 small main branches are selected for each year, and the distance between the main branches is about 20 cm. The dense branches should be properly removed. 2. Cut off the diseased branches and worm branches: Insect pests and diseases that overwinter in the trees, combined with the winter cut completely cut off the pests and branches to burn or bury deeply, the general garden general spray general tree sterilizing and disinfecting, the damage in the coming year can be significantly reduced. 3. Scrape rough old bark: In the rough old bark and trunk cracks of fruit trees, a large number of wintering germs and pests are often lurking. The old bark is scraped off, the general tree is applied, and the bark that is scraped off is buried deeply. It has a good control effect against various diseases and insect pests, and can even completely eliminate certain pests. Orthopedic Surgery Accessories Spine Frame,Spine Surgery Support,Spine Surgery Frame,Surgery Knee Knife Holder NINGBO TECHART MEDICAL EQUIPMENT CO.,LTD , https://www.techartmed.com