One, summer scissors
In the first year after colonization, heavy shearing is generally not performed. After drying, leave 1-2 main branches and 3-5 lateral branches. The lateral branches should be topped in time to form auxiliary feeding branches, which will help increase the growth. The second summer begins with the summer cut. The specific approach is:
1, wipe the bud
Eliminate the latent buds sprouting on the main stem, the main vine, and the live buds below the grafting interface to ensure rapid formation of shoots on the shelf. For the result tree, the robust result mother leaves 5-6 result branches, and the weak result mother branch leaves less result branches. Excess branches should be erased early to avoid consumption of nutrients.
2, thinning
The thinning should be carried out when the new shoot grows to more than 20 cm. Weeding out too much, too dense nutrition techniques, delicate branches and branches of disease and insects, so as to achieve a reasonable distribution, we must make full use of the space, but also ensure that Permeability in the shed. The result is that the distance between branches is generally 10 -15 cm, and 10-15 shoots per square meter are appropriate.
3, topping
When the new shoot grows to more than 50 cm, it will be topped. After the topping out, the axillary shoots leave 5-8 pieces of leaf topping to promote the filling of branches, which is beneficial to the results of the coming year; the result is that the branches are left with 8-10 leaves after the inflorescence, and the weak branches do not generally pick their hearts.
Second, winter shear
The kiwifruit winter shear mainly grasps the amount of buds remaining, the length of the trimmed branches, and the dendrite renewal.
1, leaving the amount of bud
Based on the yield per plant, the variety, shelf size, and water and fertilizer conditions vary. The unit yield of kiwifruit is determined by the yield of a single plant. The yield per plant consists of the number of fruit branches, fruit number, and fruit weight. Therefore, in winter pruning, the average number of buds per plant should be determined based on the relationship between the above factors. The formula is as follows: the number of leaves per plant = the expected output per plant (kg)/[% of buds% of fruit pods per fruit per gram of fruit weight (kg)].
2, trim length
The pruning length of the kiwi fruit is determined by the strength of the resulting mother shoots, and the strong branches and multiple shoots are kept, and the weak branches are left with little buds, generally leaving 15 to 50 cm (about 8 to 12 buds).
3, branches update
The branch update mainly refers to the new branch update and the old branch update. New branch update (results of parent branch renewal), the annual growth of kiwifruit is large, but the resulting parts generally cannot germinate new shoots, which results in the relocation of the resulting parts. Therefore, the results should be updated in time to prevent dendrite from growing. Results The renewal of the parent shoots is conducive to the transport of nutrients and moisture. We must purposefully cut off the weak branches, choose to retain the strong branches, and leave enough buds in order not to affect the output. Generally, about 30% of branches are renewed every year, and every three years is an update cycle, making it prosperous and the result is relatively fixed. Large amount of pruning, perennial branches and more cutting, trauma, aging branches, the ability to decline, it is necessary to update. Kiwifruit can be divided into whole plant renewal and local renewal for many years. It generally adopts local renewal to grow robust shoots (adult branches) on the main branch. Instead of senescent shoots, some old twigs are updated every year and updated year by year. In winter, care should also be taken to remove the improper shoots from the branches, branches, and habitats. When trimming, the cuts should be kept at the top of the shoot with a 2 cm pile head, which is good for sprouting.
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