A few days ago, the reporter interviewed Ma Zhifeng, a professor and expert of miscellaneous fruit, at the Yangling Vocational and Technical College. He said that from August to October, the large cherry tree is in the late stage of flower bud differentiation. At this time, pruning can improve the structure of the tree and the light conditions, promote the accumulation of nutrients, enrich the shoots, and reinforce the internal organs.
Shu Zhi Ma Zhifeng pointed out that the sparse branch is mainly to eliminate the sprouts, dry branches, long branches, competition branches, diseased branches, thin branches, drooping branches, overly branches, overlapping branches and rotating branches, and branches in the crown. The strong spurs of the apex of the branch group were opened in the same year to open the canopy light path, improve the inner illuminating light, and enrich the flower buds. In a year, a tree can spawn up to 2 large branches, but do not form a mouth injury.
The practice of pulling branches proves that the autumn cherry blossoming angle of the large cherry is better than that of the spring. Ma Zhifeng pointed out that August-September is the best time for autumn pull branches. During this period, the opening angle of the branches can balance all buds and have fewer erect branches on the back. The base of the first layer of the large cherry is about 80 degrees, the tip angle is 65 to 70 degrees, and the auxiliary branch angle is 80 to 90 degrees. When pulling the branch opening angle, pay attention to moving the rope or falling object in time to prevent the tip angle from moving. Heart growth.
Ma Zhifeng suggested that when dealing with the branches, firstly, the temporary branches that were slowly released for more than two years when pruning in spring and summer, the long branches and large leaf buds that were picked up in the summer, and the perennial large and medium-sized branches and Raising the branches, retracting and pruning according to the space needs, in order to suppress the previous promotion, concentrate nutrition, and promote flower bud formation. In addition, for the branch group with weak growth potential, leave 2~3 branches to retract and rejuvenate.
Topping in the end of September, the last time to pick the heart, enrich the branches, enhance the cold resistance, and help the winter.
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