In the fall and winter season, the application of "low grafting and tied to the soil" technology for tea tree grafting can greatly speed up the transformation of old tea garden varieties, increase the coverage of improved varieties, and promote the industrialization of tea production. First, time and material grafting is appropriate from October to December. Prepare a 1.8 meter long bamboo strip, spring shears, grafting knife, screwdriver, small saw and agricultural film. Second, the preparation work Select the root diameter of more than 1 cm of tea, the nearest or can be removed from the tea garden of fine yellow loam can be grafted. Deep fertilization was conducted in the previous month to allow the tea tree roots to accumulate sufficient nutrients. The anvil is divided into two parts. The first time, 10 cm away from the ground, the tea tree is cut off, the tea garden is cleaned, and the fine soil is screened for use. One day before grafting, soles should be poured to keep the soil moist. Scion selection of clones of reddish-brown semi-woody varieties of tea branches, adaptability, high graft survival rate. Third, the grafting method grafted with anvil, stalk anvil, cutting ear, cuttings four steps, the specific operation is as follows: The anvil is on the basis of the first cut anvil, split the soil, from the root 2 to 3 cm at the shear once. The anvil is cut once with a spring scissor, and the anvil skin must not be damaged. The rootstock is too large and can be sawn with a small saw. The anvil is cut from the middle of the stock with a grafting knife to a depth of 2 to 3 cm. The harder rootstock can be used to hit the back of the grafting knife with wooden sticks to open the rootstock. The cutting head should be cleaned thoroughly, and the wedge-shaped surface should be cut perpendicularly from the lower end of the scion and the base of the leaf. The cutting length should be about 2 cm, slightly shorter than the cutting of the rootstock, and the two wedge surfaces should be flat. The scions are two leaves and one bud branch, the lower leaves are cut in half, the upper leaves are not cut, leaving axillary buds. Scion should be followed by cutting. Use a screwdriver to pry open the rootstock while cutting and insert the sharpened scion into the rootstock. The slightly thicker side of the scion should be aligned with the edge of the rootstock. That is, the phloem on the thick side of the ear is fully consistent, and the tighter the interaction between the rootstock and the scion, the better the splitting of the parenchyma cells and the formation of the healing tissue. Generally, each plexus tea tree is connected with 3 to 5 rootstocks, each rootstock is followed by a panicle, and large stocks can also receive 2 to 3 panicles. Fourth, the tea tree that grows the soil well should be immediately cultivated in fine yellow loam, and the scion should be buried in the soil with the soil tied for generations. Only the upper axillary buds should be exposed. The soil is pressed slightly by hand, and the rootstock and the scion should not be loosened. After soil is finished, use a watering can to wet the soil, but do not water it too much. Fifth, cover the insulation with wet straw or weeds on the soil surface, play a moisturizing effect. Every 1 meter is inserted with a bamboo strip, arched, and the middle height is 50 cm. The agricultural film is pulled on the bamboo strip and compacted with mud to form a closed environment. The conditions can also be covered with a layer of shade net on the agricultural film, so as to prevent the agricultural film from being opened by the wind in winter and avoid direct sunlight and consume water. Sixth, after the management of autumn and winter grafting generally do not need regular watering, every rainy day, you can lift the membrane to receive rain, to ensure that the film is moist inside the mud. At the beginning of April of the following year, when the tea grows to 3 to 4 leaves, it is possible to choose the uncovering film on cloudy days. Before the film is uncovered, the seedlings must be cultivated so that the seedlings gradually adapt to the environment. When the seedlings reach 10 cm or more, the top buds are removed to facilitate the growth and development of lateral buds.
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