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Electrical signal shielding:Â relying on the excellent conductivity of copper itself, it blocks high-frequency interference by reflecting or absorbing electromagnetic waves.
Pre-flower cutting is very important
Pruning apple trees before they flower is an essential follow-up to winter pruning, often referred to as spring or delayed pruning. This practice helps shape the tree structure, balance the ratio of flowers to leaves, and maintain a healthy balance between growth and fruit production. The goal is to ensure high-quality fruits, stable yields, and long-term productivity.
The best time for pre-flowering pruning is typically just before the tree starts to bloom. Pruning too early can be challenging because it's hard to distinguish between flower buds and leaf buds. On the other hand, pruning too late may reduce the tree’s stored nutrients and weaken its overall vigor.
There are several methods used in pre-flowering pruning. First, short flower branches should be pruned to leave 2–4 flower buds, while thinning out excessive or sparse buds. Second, when there are many flowers, weak buds should be removed, and more short fruiting branches should be retained. Light flower buds on medium and long fruiting branches can be cut back to encourage better flowering and fruiting for the following year. Third, on young trees, long flower buds on supporting branches can be left with 4–6 buds to promote new growth and branching. Fourth, when extending the main branches, any false flower buds from the previous winter cut should be removed, and fruit buds should be kept to help expand the tree canopy. Fifth, some varieties benefit from removing flower buds that remain on the tree for a long time, which helps control overproduction. Sixth, for weak trees, it's important to remove weak buds and focus on strong ones. Using the "setting flowers to set fruit" method during the flowering period can greatly rejuvenate the tree and improve fruit yield. Seventh, for trees that will bear fruit the next year, it's crucial to preserve as many flower buds as possible. Avoid cutting middle and long fruiting branches, but shorten and prune non-flowering long branches and vegetative shoots to encourage more flower buds in the coming season. Eighth, overlapping, competing, inward-growing, or overly dense upright branches should all be removed to improve air circulation and light penetration. Finally, when making cuts, only the flower buds should be removed—avoid damaging the fruit buds or causing unnecessary injury. Some flower buds can still develop into fruit even if not fully matured this year.
This careful and strategic approach ensures the tree remains healthy, productive, and well-structured for years to come.
Copper foil tape is a metal tape made of high-purity copper foil (≥ 99.95%) as the substrate, coated with pressure-sensitive adhesive. Its core function is electromagnetic shielding (EMI shielding), which is divided into two principles:
Magnetic signal shielding: Conductive substances (such as nickel) need to be added to the adhesive surface to suppress low-frequency magnetic field interference using the characteristics of magnetic materials.