First, pear fruit pruning
The fruit tree has a large number of fruit, the tree tends to ease in this period, the crown expands slowly, and the yield increases year by year. The main task of pruning is to maintain a strong tree vigor, adjust the balance between growth and results, strengthen the structure of the canopy, and extend the age of fruits, while strengthening the overall management. The tree that grows in the middle can sustain the golden mean through the rejuvenation of branches and branches and the peripheral branches, while the tree with weak trees weakens the extension branches of the branches and retracts and rejuvenates the branches that extend too long. Angles open too large backbone branches, can be used to replace the back branches or retraction treatment.
1. The management of full fruit period. Pear trees entering the fruit period are often caused by deterioration of the light in the canopy, resulting in weak growth of the branches, poor flower bud differentiation, and the resulting shifting of the parts. Peripheral long branches and more trees may be appropriately thinned, and long branches without affecting the tree shape may be treated slowly. For dense branches of trees, branches may be removed in batches year by year to prevent excessive growth. In the middle of the tree where the main branches of the upper part of the country are more likely to grow, they may adopt methods such as thinning or falling heads to ease the tree potential.
2. Sparse dense auxiliary support branches. The overlying layered auxiliary branches can be removed in batches, or the shrinkage and shearing can be transformed into the result branches.
3. Reasonable thinning of small and medium-sized fruit sticks. For the small and medium-sized branches with too weak growth, excessive branching, and reduced ability to produce results, some branches may be sparsely removed. Branches with long extensions and outward displacement of the resulting parts may be retracted at strong branches. Branches that have lost the ability to make results can be removed or re-cultivated; leggy branches that are born within the crown can be used to cultivate fruiting branches if they are properly positioned.
4. Remove excessive flower buds. In the pears that have reached the fruit stage, the number of results has increased sharply, and the tree tends to weaken and grow in size. Therefore, it must be prevented by sparse cutting of flower buds and fruit thinning.
Second, aging pear tree pruning
After entering the aging pear trees, the tree vigor gradually weakened, the growth volume decreased year by year, and the yield decreased significantly. If the pruning is proper, the fertilizer and water management is better, and the considerable yield can be maintained. The main task of this period of pruning is to strengthen soil and fertilizer water management and promote root regeneration and rejuvenation; use the characteristics of long-lasting pear buds, to perform heavier pruning stimulation, promote new shoots and leggy branches, enhance tree vigor, and renew and rejuvenate the backbone. , delay the aging of dead branches and death.
1. Update. When it is found that the tree vigor begins to debilitate, it is necessary to promptly adopt the method of restraining the former and promptly promoting the local update. That is, in the front and rear branches of the main lateral branch, the back branch with smaller angle and stronger growth will serve as the extension head of the main and lateral branches. , And eliminate the original extension head.
2. Promote Meng. If the tree vigor has been severely weakened, and some of the trunk branches are about to die, large updates can be made early, that is, selecting the appropriate lengthy branches within the crown to promote growth through short cuts and replacing some of the branches. With the increase of fertilizing water, deep turning to improve the soil at the same time, the implementation of heavy retraction of the backbone of the various branches, to promote the local transfer of sprouting buddies or promote the growth of short branches to grow branches.
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