Apple Summer Scissors "Two Crosses"
time. The effect of summer shear is affected by the time of pruning. Sometimes missing a suitable pruning time will have adverse effects. For example, in twisting the tip, it must be carried out when the base of the new shoot is semi-lignified, otherwise the new shoot will be broken. For another example, in order to increase the fruit setting rate, girdling should be carried out at the flowering stage or before flowering, and the effect of missing this period is not obvious and it will result in drop and fruit drop.
Object. Generally only suitable for sapling, wangshu, michi, wangzhi or vigorously growing varieties, such as girdling should only be applied on the auxiliary branches, temporary branches or biennial branches of wangshu, or on the large The tree was applied on the tree to promote flower bud differentiation and lay the foundation for the results of the Jubilee.
Pull the sticks. Pull branches generally in the flower buds before the differentiation of the middle and late June, the time is appropriate at noon, because noon branches soft, tough and difficult to break. Pullups generally open branches with angles less than 60 degrees to 80-90 degrees.
Twist tip. The target of the twisted tip is the strong base of the branch, and the thickness of the base is 2 to 5 cm, and the tip is rotated by 180 degrees. Twist later the base is easy to pull out new upright branches, to promptly wipe buds or dredged.
Ringing (cutting). The method of girdling is to peel the bark off at the base of the strong-branched branches. The width is determined according to the growth of the tree, the thickness of the branches, and the principle of healing after one month of stripping. Under normal circumstances, the depth to xylem is appropriate. If the ring is cut twice, it must be 5 to 10 cm apart.
Take heart. It is an important technical link in the management of the growth period of fruit trees to implement the topping or continuous topping technique of the apple tree. 1 Topping time: It is appropriate to use mid-May, mid-July and mid-September. 2 Topping objects: Those born on the back, back and back of the mother branch, and branches that do not stop for a long period of time. 3 Topping method. First, go to the young top, and then remove the top 3 to 5 young leaves and keep the petiole. 4 topping effect. After topping the leaves, the top will not reappear. The first leaves and two leaves left after the leaves are removed will increase the accumulation of nutrients and allow most of the leaf buds to form high-quality flower buds.
Thinning. Sparseness is to eliminate the branches, competition branches, erect branches, and densely crowded branches that grow on the trees in August and September, so as to save nutrients, improve light, and promote the growth of the remaining branch buds.
Short cuts. The short time is generally appropriate in mid-July, and the short-cut target is to cut the shoots of the lateral shoots near the tip of the annual branch and the new shoots on the back. The new shoots that are drawn from the back of the branch and the second branch that germinates after a short cut grow vigorously should be removed from the base.
Scrape the skin. It is generally used for young trees, which are generally used once a year. The time is appropriate from the early July to the early August. The method is: using a bud graft knife to cut a smooth section of the trunk, cut the cortex through the xylem. Then cut the tangent line 2 to 3 cm wide line segment, and then cut each section with a knife and cut down about 5 cm long incision, deep to the xylem, and then each of the cortex was uncovered, and then restored to the original position Finally, a plastic film is used to protect the scraping ring.
avoid. Loosening branches or girdling during pruning will result in the formation of wounds. If the wound heals slowly, apple rot disease and other diseases can easily occur. Therefore, when sparse branches are to be prevented, a large amount of wounds will be created by removing too much one time, and care should be taken not to leave the short piles. They should be removed from the base to prevent the wounds from healing. Caused a large number of budding shoots in latent buds. The resulting wound was coated with a protective agent and the wound was wound to wrap around the film.
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