Autumn cuts of fruit trees are pruned in the early stages of fruit shoot growth. Autumn cut can improve the tree lighting conditions, save nutrient consumption, increase organic nutrient accumulation, and increase the current year's output. This edition pays attention to autumn cuts of fruit trees such as apples, cherries, apricots, and walnuts in order to provide scientific guidance for the majority of fruit growers.
Yan Zhihui, head of the horticultural station of Fengxiang County, Baoji City, Shaanxi Province, suggested that when the crop is cut in autumn, the trees in the autumn will be cut early, the tree in the early morning will be cut early, and the tree in the evening will be cut in the evening. Generally, it should be within 20-30 days before the fall (August). Mid-to late October) completed. At the same time, he also proposed the following four methods of autumn shear.
Thinning and brightening autumn tree branches and leaves, for the fruit period Wangshu to eliminate too many backbone branches and large auxiliary support branches, open the light path, remove one or two large branches within one year, can be completed in different years, otherwise it will Debilitating the tree vigor; for the first fruiting branches and 2-3 year old saplings, we must eliminate the erecting branches, competing branches, overly long branches of the internal organs, and the young sprouts at the backs of the excision and excision sites. Autumn shoots supplement internal light to prevent nutrient consumption. If there is fruit on the branch that needs to be removed, it should be removed after the fruit is picked or when it is cut in the summer. When there are too many autumn rains, the inner shoots continue to sprout and prosper.
Light-scissor topping In autumn, the young shoots of the young shoots were lightly cut and tossed, which can effectively control the growth of new shoots, reduce nutrient consumption, increase tree nutrient accumulation, and promote flower bud formation. From early August to mid-to-late September, all but one of the auxiliaries who are not stopped will be cut to pieces or trimmed. The densely planted orchard can also extend its head 25 centimeters per head 25 times, and pick up the heart once every 15 centimeters long, and then pick it up to the semi-lignified place. In this way, the growth potential can be alleviated, and the formation of flower buds in autumn shoots can be promoted to facilitate the formation of good result branch groups. The 2 to 4 leaf toppings can be used on the upright branches on the back of the Wang branch or main branch after cutting, which can also control growth and promote flowering.
Pulling branches to promote autumn pull branches can improve light, ease tree vigor, and promote tree growth from vegetative to reproductive growth. At this time, the branches are soft and the branches can be prevented from splitting at the base. In the autumn, the branches, auxiliary branches, and temporary auxiliary branches are generally opened in the fall. Generally, the main branches are drawn at 70 to 80 degrees, and the temporary branches and auxiliary branches are drawn at 90 to 100 degrees. Pull the base angle soft before pulling the branch to reach the standard for pulling the branch, then pull the branch to the desired position and angle.
Litchi is softened from early August to late September. When the shoot is approaching its length or has been lignified, it must extend 3 to 5 of the current year to extend its head and shoot or compete on the main branch. And twigs that are not flowered in the canopy have been softened. Grasp the base of the shoot by 7 to 10 centimeters by hand, and then repeatedly bend (grip) the shoot from inside to outside, do not damage the leaves, and damage the shoot tissue to the brittle fracture of the vascular bundle in the branch. Cracks appear outside. It is best to carry out 2 or 3 times every 7-10 days to suppress the growth of the apical shoots and promote the formation of short shoots in lateral buds, which will lay the foundation for the formation of flower buds in the current year or the following year.
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