Summer shear principle
1. It depends: summer pruning is generally only suitable for young trees, lush trees, dense branches and lush branches, especially dense branch orchards, because it is to relieve tree vigor, promote flowering and improve fruit setting rate.
2. Different places: Because the growth potential and phenology of pear trees in different orchards are different, pear trees of different ages are also different, so corresponding summer cutting techniques should be adopted according to trees, orchards, fields and tree ages.
3. Pruning amount: Pruning amount of pear trees in summer is generally light. At present, winter pruning is the main method, supplemented by summer pruning. The two are combined and complement each other.
Summer pruning time
Summer cutting should not be too early. When the growth of medium and short branches basically stops, the leaf area of the tree reaches more than 85% of the whole tree, and the new shoots are semi-lignified, that is, it is best to carry out supplementary pruning in May 1 and mid-May and June-July.
Summer shearing method
1. Ring cutting
Ring cutting is a method of cutting off the phloem of annual branches every 30-50 cm with scissors before germination in spring. Its purpose is to promote the buds under the ring to grow strong branches, and then cultivate them into medium or large fruiting branches.
Pick a heart
In the growth stage of new shoots, the tender shoots at the tip should be removed. Core removal can inhibit the growth of new shoots in a short time, reduce nutrient consumption, accumulate and promote the growth and enrichment of branches, and reduce overwintering pumping.
3. Sparse branching
Remove the branches of scissors and saws, as well as the vigorous new buds on the back, top and indoors. All kinds of long, medium and short new buds that are growing and stopping growing should try not to be heart-shaped or shortened. The removed branches shall not exceed 1/3- 1/2.
Pull out branches
Branches are usually picked in June 1 and mid-June. When the growth of spring shoots slows down or stops, the methods of pulling and dropping branches are adopted for excessive and upright branches to alleviate their growth potential, promote the development of flower buds and bear fruit early. This is an important measure to prune pear trees in summer.
Curved branches
From July to August, under the action of external force, the newly grown branches grow downward or left and right. You can also tie it to the branches of yourself or other plants to change the growth direction, or you can wrap it in a circle, but you must not break it.
In a word, pruning pear trees in summer is of great significance to improve the yield and quality of pear trees. However, we should pay attention to the principle of pruning pear trees. Don't cut them blindly in summer, but learn to use them flexibly.