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How to prune the vines in the first year?
The new shoots begin to grow about a week after the grape seedlings are planted, so the redundant branches and vines should be removed in time and the main shoots should be selected. When the height of seedlings is about 35 cm, tendrils begin to grow. Tendrils should be removed in time, bamboo poles should be inserted and bamboo shoots should be tied in time to ensure the vertical growth of main bamboo shoots. The first secondary branch leaves 2 ~ 3 leaves, and the second secondary branch leaves 1 ~ 2 leaves. When the seedling height is 70 ~ 80 cm, the core of the main vine is removed, and the top leaves 1 secondary shoot to continue growing. When the top secondary branch is 50 ~ 60 cm long, core the main vine for the second time, and leave 1 secondary branch at the top to prolong the growth, 1 ~ 2 pieces for the first secondary branch and 1 piece for the second secondary branch. When the top secondary branch grows to 30 ~ 40cm, the main vine is cored for the third time, and 1 leaf is left in the secondary branch to prevent winter bud germination. Combined with pruning, calluses antiseptic film should be put on the pruning mouth in time to seal the wound, and the whole garden should be sprayed with general tree protector for sterilization and disinfection, so as to reduce the source of germs.