Rational pruning is an important management technique in the production of fruit trees, and it is also a powerful measure for the prevention and control of pests and diseases. Winter pruning can regulate the contradiction between vegetative growth and reproductive growth. It can also make the trees light and reduce the consumption of tree nutrients. The purpose of pruning in dormancy period is to focus on the different ages: during the sapling period, it is mainly to complete plastic surgery; , The main results of the branches; full fruit period, mainly to adjust the proportion of flowers, shoots, maintain and rejuvenate the growth of the tree. All kinds of fruit trees have their own physiological characteristics, and they must be treated differently when pruning. This article lists the issues that should be noticed in winter fruit cutting:
1. Balance tree, branching fruit tree imbalance results in difficult results. As the saying goes, "strong side and weak side, strong two ends don't result, strong side loves long trees, weak side doesn't see flowers." Strong, weak, strong, weak, strong, weak, etc. must not be allowed.
2. The main branch of the master-slave relationship is 1/3 to 1/5 of the trunk, and the branch on the main branch should be 1/5 to 1/7 of the main branch. Those larger than the master branch should be eliminated, leaving no trouble.
3. Skillfully regaining the branch's senility, no ability to retract and renovate in time. In general, the result does not indicate the aging of the fruit.
4. The age of the tree is different in size and age. The pruning is also different. The saplings have strong nutrient growth. They should be lightly cut and repaired, and the old trees should be updated and rejuvenated.
5. Cutting off pests and branches Some diseases and pests cause the branches of fruit trees to dry up. These branches become winter habitats for diseases and insect pests. In the following year, they threaten fruit trees. Therefore, these branches must be cut off during the pruning process to focus on burning, eliminating pests and diseases, and reducing the source of orchard germs.
The wounds caused by pruning should not be taken seriously. If they are not closed in time, they will be cracked and contaminated, and a large number of gas-borne pathogens and viruses will enter the tree body from the wound to induce fruit tree rot and other pests and diseases. The "wound and anti-corrosion film" is applied to the wound to protect the growth of wound healing tissue, prevent infection by decaying bacteria, prevent soil and rain pollution, prevent freezing, and prevent cracking of wounds.
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