After a year of picking, the tree has been greatly damaged. Grasping the autumn and winter seasons and doing the tending work in time, it is essential to speed up the restoration of the tree body, cultivate the tree, and capture the high quality and high yield of the tea in the next year.
Science is deep. Deep tillage can be carried out in autumn and winter. For the mature tea garden, the general deep ploughing is required once, and the depth and width of the deep turning are determined according to the age of the tea tree. For example, the young tea garden generally has a deep ditches of 15 cm and a width of 50 cm. It leaves the tea tree about 20 cm without damage to the roots; the middle-aged tea tree is not more than 20 cm deep and the width is not more than 35 cm. It should be root extension; aging tea tree The depth is no more than 40 cm and the width is no more than 45 cm, which is conducive to the rejuvenation of the tea root.
Reapply the base fertilizer. 80% of the spring germination and growth of the spring comes from the nutrients absorbed by the roots of the tea tree in the autumn and winter of the first year. The amount of fertilizer applied to the tea garden in autumn and winter is sufficient and nutritious, and the spring tea of ​​the next year has early germination, high yield and excellent quality. . The main organic fertilizers that can be used as base fertilizers are vegetable cakes, livestock and poultry manure, compost and various soil fertilizers. The base fertilizer should also be properly applied with quick-acting commercial nitrogen, phosphorus and potassium fertilizers. The application rate of base fertilizer is generally 50% to 60% of the annual fertilizer use. For example, the tea plantation with 800 kg of fresh leaves per mu should be 100 kg of vegetable seed cake fertilizer (or 2000-2500 kg of human and animal manure) plus urea 45. Kilograms, 25 kg of superphosphate, 10 kg of potassium sulfate. The base fertilizer is generally combined with the deep-ditch strip casting in the autumn and winter tea gardens, that is, the trenches 20 to 30 cm deep are excavated vertically below the edge of the crown, and the soil at the bottom of the trench is dug deep, and the fertilizer is applied, and finally the soil is covered. Note that tea gardens do not use grass ash, fire ash and chlorine-containing fertilizers.
Spray the sealing medicine. The overwintering pests of tea trees mainly include small green leaf mites, tea mites, tea caterpillars, mites, mites, etc., which can be controlled by 0.7% lime semi-quantity Bordeaux mixture or 0.3-0.5 pulsate stone sulphur mixture.
Pay attention to antifreeze. Before the advent of the cold wave, some fertile fertilizers such as cow dung, coke ash, and phosphorus and potassium fertilizers will be added to the tea gardens to improve the soil temperature. After fertilization, the soil should be cultivated in time, and the new base of the tea tree should be 8 to 10 cm thick. Soil layer.
(Li Cuiying Cao Lijun)
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