First, improperly targeted girdling The tree that is suitable for girdling is a tree with strong callus ability, flowering difficulty, and age-inefficient varieties and growth potential. It must not divide the species and tree vigor.
Second, improper girdling time The appropriate circumcision period should be from late May to early June, when the fruit tree bud physiological differentiation period begins, circumcision too early, affect the normal growth of new shoots, circumcision too late (after July ) In that year, the wound was difficult to heal, the branches were easy to die, and the circumcision was too early and too late. The flower promotion effect was poor.
Third, improper girdling of the girdling area should be carried out in the smooth part of the backbone of the central stem 15-30 cm or lateral branches, must not circumcision in the trunk to prevent extreme weakness of the tree, resulting in low yield, poor quality, economy Short life and other adverse consequences.
Fourth, after ripping irregularly girdling must pay attention to aligning ripping, can not make it misplaced, stripping mouth width should be the same, and the incision can not be burrs to facilitate wound healing.
Five, knife wound too deep can not be too hard to circumcision, requiring only to cut the phloem, not to damage the formation layer and xylem, in order to facilitate wound healing, to avoid injury after xylem caused by the formation of black wounds in the branches, affecting the tree skeleton structure The firmness.
6. The appropriate width of girdling for stripping the mouth is 1/15-1/10 of the diameter of the stripped part of the stripped part, and the maximum width is not more than 5mm, rather narrower than wide.
7. Multi-circular circumcision can only be circumscribed on the main branch or lateral branch. It cannot be girded on both side branches but also circumcision on its mother branch. Or more. For trees or branches that are still prosperous after one round of girdling, it is advisable that at least 1/2 of the first circumcision wounds have healed in the beginning of July, and the second 3-5 cm below the last excision Secondary girdling, and the excision should be narrower than the first girdling.
VIII. Excessive Peeling Percentage The amount of exfoliation per tree should be determined by its growth potential and should not exceed 2/3-1/2 of the total number of stem branches in the whole tree, leaving part of the branches not girdling and leaving the root system still Can get a small amount of photosynthetic products, so as not to excessively weaken the tree vigor, causing premature aging trees.
Nine, after peeling off the applicator, some growers are worried that the girdling site is infected with rot bacteria, and therefore they apply some drugs such as Formamide and arsenic on the mouth, resulting in dead trees (branches). The excision wounds should not be randomly coated to facilitate the smooth healing of the wound.
X. After improper girdling after peeling, if the peeling does not heal within 1 month, use plastic film dressing to promote the rapid healing of the wound; after girdling, the management of fertilizer and water in the orchard should be strengthened; Three 0.4%-0.5% urea solutions and 0.2%-0.4% potassium dihydrogen phosphate were added to supplement the nutrient of the tree. When the amount of flower formation was large, strict flowering was carried out during the flowering period the following year to make the tree a reasonable load. , maintain its strong tree.
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