Sparse pile
If sparse shearing and shearing do not leave a certain length of stumps, it is easy to cause vine rot. The length of the stump should be determined according to the size of the dendrite. Usually, when the annual vine is sparse, the residual stump should be 2-3 cm long; when the thick sprig is sheared, the diameter of the stump is considered, leaving 0.5-1 cm long. Debris. When shredding is performed, a portion of the buds should be left as a preliminary shoot based on the number of leaves to be left. Injury
Grape vines are the main organs for storing nutrients. If the main vine is damaged too much and too heavy, it will not only cause the main vine to rot, but also affect the growth potential and the amount of fruit. Therefore, the wounds on the main vine when trimming should not be too close to each other, but should also avoid causing "mouth injury". Wound protection
For large wounds with a diameter of more than 2 cm and wounds on the main vine caused by the renewal of the old vine, in order to prevent the wound from infecting the bacteria, a 3% potassium permanganate solution or 1% calcium chloride solution should be applied after trimming to sterilize the wound. protection. Spring shear pile
The stumps left during the winter shearing are of different lengths due to the different diameters of the vines, especially for short-stemmed stubbles of the 1-year-old vines, which can be cut off in spring.
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