Apple tree winter shears must be protected
If the fruit tree is to be cut in winter, it will inevitably produce a cutting saw. Saw cuts are equivalent to wounds caused by surgery on the human body. Poor cut saws of fruit trees can cause poor wound healing, severe rot infection, and damage to the tree. In most cases, rot occurs most often at the cutting edges.
How to protect the cutting edge? Special attention must be paid to everything from pruning techniques to cutting and sawing.
â‘ Try to avoid trimming during absolute low temperature. The so-called absolute low temperature period refers to the severe cold weather of 39, 49. Trimming in the absolute low temperature period will cause frostbite of cuts, affect nutrient transport in the coming year, and be susceptible to rot and deficiencies.
â‘¡ When pruning, pay attention to the number and position of the larger cutting saws of the whole tree, especially not to have too many large wounds on the trunk, otherwise it will affect the tree potential.
â‘¢ Try not to leave piles when going to the big branches. If the pile is left too long, it will easily rot inward from the sawn part until it spreads to the trunk part. Generally, fruit farmers think that leaving piles longer and rotten to remove one will help protect the trunk. In fact, this idea is wrong. It is not easy to cause decay without leaving piles, why is it necessary to leave piles?
â‘£ The cutting saw should be smooth, and no burrs should be left, especially the larger saw should be smoothed with a sharp knife to facilitate healing.
⑤ When using scissors to sparse branches, the big blade must be down, and the small blade's crush on the remaining branches is easy to be infected with rot; when the small blade is on, the small blade's crush is on the removed branches, leaving The undercuts are smooth.
â‘¥ For fruit trees with rot and viral mosaic disease, use different shears and saws when pruning. The shears used on diseased trees and then used on healthy trees will cause cross infection of diseases.
剪 After cutting, you must apply the cutting saw to protect it. This time it is very important to use the medicine. Cutting and applying wounds to close the wound can not only prevent water loss, but also prevent the infection of rot germs and promote healing.
Pupae can also be protected by wound clay. Larger wounds are coated with colloid-like soft mud, and then wrapped with plastic film to prevent the invasion of diseases and insect pests, reduce the loss of wound water and facilitate healing.
⑨ The wound on the trunk or big branch can also be bridged in the next spring to connect up and down to promote healing.
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