In the summer, green shoot cuttings are carried out on the shoots of grapes that are not yet lignified or semi-lignified. Cuttage seedlings can be planted in the fall of the year and the nursery cycle is greatly shortened. The seedlings of cuttings of green branches have high survival rate and good quality, so they are widely used in grape seedling production.
Cutting time. It can be carried out from June to August, preferably in the summer, when the shoots grow to 5 to 10 knots, semi-lignified to have a certain degree of hardness and maturity when the cuts are inserted.
Yellowing treatment. The new shoots planned to be cut in the tree 3 weeks before the cutting are wrapped with black cloth and thick paper to carry out yellowing treatment, which can effectively prevent direct sunlight from green shoots and facilitate the differentiation and rooting of roots.
Slotting preparation. Loose fertile sandy loam or mild clay loam plots were selected to form a 1- to 1.2-meter-wide slot. The seedbed requires good lighting conditions and drainage and irrigation are convenient.
With leaf cuttings. Cut the cuttings into small pieces of 15 to 20 cm long. Cut them slightly to cut them. Cut the upper cuts at 1 cm above the upper shoots. Remove the lower leaves to facilitate the cuttings to contact the soil. Leave the upper part 1 to 2 Leaf. To reduce transpiration, each leaf can be cut off if the leaves are large. Insert the cuttings into the whole seedbed at a 1015 cm spacing.
Plug in management. Plug enough water to make the cuttings fully in contact with the soil. Build a shed that is 0.8 to 1 meter high, with the same width and width, and remove it after it has survived.
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