Winter tea garden management is an important agricultural technology measure. It is directly related to the quality, output, and benefits of tea in the following year. In order to improve the technical level of tea garden management, give full play to the production efficiency of tea gardens, and promote the increase of spring tea in the next year, it is extremely important to ensure that tea gardens in tea gardens are well managed.
1. Deep-turning: After the tea trees have grown and picked in the four seasons of spring, summer, festival, and autumn, the tree body has consumed a lot of nutrients, and the soil between the rows has become very hard. Deep plowing in winter is conducive to loosening the soil, improving the physicochemical properties of the soil, promoting the growth and development of tea roots and the permeability of the soil, and is very important for restoring the growth of tea plants. Deep plowing is generally carried out from early November to early December of the year. Combined with filling, the depth of 15-20 cm is appropriate. It is too deep to injure the root system and affect the normal growth of tea plants.
2, fertilization: tea garden winter fertilizer to farm fertilizer or organic fertilizer, the amount of application per mu is 2000-3000 kg or 1000-1500 kg. Trench deep in the tea tree line, after the application should be covered with soil to prevent loss of fertilizer. For stepped tea plantations, fertilizer should be applied inside the steps. Fertilization in winter is generally before the end of December. Fertilizers are affected by late-fertilization due to low temperatures and weak root absorption. But can not be given too early, otherwise it will delay the autumn shoot freeze, affecting the normal growth of tea.
3. Pruning: In the whole year of production, there is a tea plantation with a flat picking surface, which can be lightly trimmed for 3-5 cm in winter to control the tree height and cultivate the crown picking surface. The vigorously growing tea trees generally cut out the protruding parts of the canopy, so that the canopy surface is smooth; for the tea gardens with more thin and weak branches and chicken claws, the yield begins to decline, the deep pruning is performed, and the thickness of the green leaf layer is cut off by 10-12 cm, and is cut off. All chicken claws will grow thick, strong, and homogeneous in the next year; for old tea gardens that are already senescent and have reduced production levels, they should be pruned and cut to one-half the height of the canopy, which will promote the overall renewal of the tea tree crown and restore production as soon as possible. ability.
4. Closing the garden: The weeds and litters between the tea trees are the places where pathogens and pests have passed the winter. Clearing the garden in time will help reduce the number of overwintering pests in the tea garden. It can be controlled with a 0.3-0.5 Baume degree lime sulfur agent. When the spraying temperature does not exceed 15°C, the weeds in the upper and lower leaves of the tea bush, inside and outside the leaves, and on the ground must be sprayed and sprayed to improve the control effect. To be completed before the end of December, when the closure of the park should be strictly controlled the concentration of liquid to avoid phytotoxicity.
5, antifreeze: winter high-altitude tea gardens should pay attention to antifreeze, timely deep plowing soil, fertilization and row between the grass, help increase the soil temperature, between the rows covered with straw, weeds, etc., prevent tea freeze, promote tea early spring , develop strong buds, to achieve high quality and high yield of spring tea.
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