Tebu Lang (American hybrid apricot plum) dark purple skin, often brown stripes, fruit oval, bright red pulp, mature fruit soluble solids 22%, juice, quality, excellent, average weight of 109 grams, the largest fruit Weight 150 grams, introduced from the United States. In 2002, it was introduced into the open cultivation of the city, matured in the area at the end of June, and cultivated in a protected greenhouse in a winter-warm greenhouse. It could mature in the late April. After ripening, the tree hasn't been harvested for 1 month, and in the second year, it can produce 2,000 kg per mu. The local people call it "the beauty of the heart" and the economic benefits are very high.
The Shouguang conventional solar greenhouse was used as the protected area, and the trees were tilted at 45 degrees to the west or south of the tree body.
First, plant 667 square meters of high quality decomposed manure 6000-8000kg or decomposed chicken manure 3000-4000kg, plant spacing of 0.75 to 1m, row spacing of 1.8-2m, planting 333-510 per 667m2, without using high-quality finished seedlings, Digging planting ditch, groove width 1m, depth 0.5m, soil consolidation should be properly deepened, topsoil and subsoil distribution, backfill, first topsoil and sufficient amount of decomposed organic fertilizer, appropriate amount of phosphorus and potassium fertilizer to fill in, to the ground 20 ~ Fill the subsoil with 30cm to prevent the fertilizer from burning roots. Seedlings are suitably planted in shallow depth, watered after planting, and mulched after 1 to 2 days of water infiltration. After planting, it will be dry, with a height of 30-50cm, a low height in the south and a one-sided shape in the tree.
Second, the promotion of flower-promoting technology, "pre-promotion and post-control," is the key to Tebulan's technology. “Foreward promotion” means to promote growth in the early stage. Before mid-July, all management measures were aimed at promoting nutrient production and rapid expansion of the tree canopy. “Subsequent control” means the promotion of flowers in the later period. After mid-July, all management measures were to control the tree potential. Promote flower bud differentiation for the purpose.
When the new shoot grows to 15 to 20 cm, it begins to recover the available fertilizer, and the top dressing and the foliar spray fertilizer alternate. The underground dressing is usually applied to 40 to 50 g of urea per plant, and the foliar spray is 0.3% urea and 0.4 to 0.5% phosphoric acid. Potassium dihydrogen peroxide is applied once every 10 to 15 days for 2 to 3 consecutive times. Water is combined with topdressing, and water is treated depending on soil moisture.
Planting the first year. Immediately after the seedlings germinate, rootstock buds are removed and the rest of the buds are not wiped. Each plant stays at the tip of one of the most prosperous new shoots as the main branch, and all buds on the main branch are preserved. The rest of the shoots grow to 30cm in length, slowing down and promoting early results. At the same time, Fuping’s new growth has moderated, which is an important reason for its rapid formation. In addition to litchi during the growing season, all new shoots are not topping in order not to send too many useless small and weak branches. Not topping the main branch so as not to affect its extension. When the height of the tree is about 2m, insert small bamboo poles on both sides of the main trunk and tie the flat branches on the bamboo poles. Adjust them up to make the tree look like a vertical fan or like a vertical fish. bone. The first year of planting in protected areas is about 45 degrees. The north and south lines fell westward, and the east and west lines fell southward. Do not pull the main branch into a bow shape. The main branch is still straight, but it is slanted. Immediately after pulling, stand upright and stand straight on your back. At this time, the main branches of the whole garden are arranged in parallel, uniform and uniform. In winter pruning, the upright branches, overlapping branches, over dense branches and cross branches are removed, and the remaining branches are not trimmed.
The concentration and time of spraying PP333 was determined based on the tree growth potential. For example, spraying 15% PP333, 50 to 300 times liquid, and spraying 2 to 3 times in intervals of 10 to 15 days between the middle and late July and the beginning of August can effectively control the growth of new shoots and promote flower bud differentiation.
III. Pre-stamping technical management and planting In the year of that time, Tebubanglang applied organic fertilizer on the basis of sufficient basal fertilizer, but it has already produced trees and should apply organic fertilizer and compound fertilizer one more time in mid-September. The dosage is 1,000 kg per mu of decomposed chicken manure or 2000-3000 kg of manure, 50 kg of potassium sulfate compound fertilizer and irrigated with water.
The winter cuts before the shed shall follow the principle of "mainly based on thin branches, long stay and long release." Long-term middle and long fruiting branches, short and penetrating fruit branches, dredging or flattening fruit branches on the back, thinning off no-strong vegetative shoots, disease-disease branches, and competition branches: to make Tetang Brown quickly go through natural hibernation to warm up early In order to achieve early production, the sheds can be covered and grass mulch can be covered when the average temperature in the late autumn is below 10°C. At the same time, the grasshoppers are opened and vents are opened at night to allow cold air to enter. During the day, grasshoppers are closed and the air vents are closed. Keep the low temperature inside the shed so that it can pass through natural hibernation smoothly.
Fourth, the protection of the cultivation of temperature and humidity control Temperature and humidity management of the most critical period for the germination period, flowering period and fruit coloring period. During the pregermination period, it is required that the temperature rise is slow, and the occurrence of the first bud phenomenon should be avoided because the temperature rises too fast and the ground temperature rises too slowly, resulting in incoordination between the ground temperature and the temperature. The temperature is controlled at 12 to 18°C ​​during the day and greater than 5°C at night. Humidity should be less than 80%. During the flowering period, we should maintain a “low temperature and humidity” environment, ie, 18 to 20°C during the day, 7 to 10°C at night, and 50% air humidity. During this period, we must prevent nighttime freezing damage and excessive temperature difference between day and night (the temperature difference between day and night should not exceed 15°C) Occurrence of the phenomenon, young fruit during the day 15 ~ 20 °C, more than 7 °C at night, humidity 50%. The fruit enlargement and coloring period, ie, daytime temperature 20-25°C, nighttime 10-15°C, and air humidity 60%-70%, should prevent the occurrence of high-temperature injury during this period. The daytime temperature should not exceed 30°C, and appropriate Increase the temperature difference between day and night to improve the quality of the fruit. In the near-mature period, the temperature is 22-28°C during the day and 14°C at night, and the air humidity is 60%-70%.
5. Pruning This tree-shaped tree retains 1 main branch formed by the main body and is slanted at a 45-degree angle. There are no side branches, and all branches of the result are directly carried on the main branch. When the line falls south, the main branch of each tree in the park stretches in the same direction. After planting the cultivated plant, the dense shoots will be cleared out and the shoots will be straightened on both sides. However, the shoots should not be picked up. Due to the rapid expansion of fruit before harvest, large amounts of nutrients are consumed, resulting in extremely debilitating trees. Therefore, when pruning is not practicable within 20 days after harvesting, measures such as using fertilizer and cutting off roots should be used to quickly restore tree vigor. After 20 days, pruning must not be repeated. If the pruning is too early and too heavy after harvesting, the tree vigor will be even more weakened. This is one of the reasons for the occurrence of yellow leaves, dead roots, and even dead trees in protected plants. After pruning fruit, pruning branches should be straightened, and the branches should be straightened. After appropriate leveling, the oversized branches should be properly removed and the overhanging branches should be completely removed. The cross branches should be properly retracted. The branches cut away. Afterwards, growth regulators can be applied for control. This method is pruning light, strong tree vigor, flower buds formed soon after cutting, and 2 months earlier than the first year of planting, flower buds are extremely full, the fruit set rate is high in the following year, and the yield is high. During winter pruning, the erect branches, overlapping branches, and dense branches were clipped and the cross branches were cut back and the branches of the weak branches were appropriately updated.
VI. Pest control According to the requirements of pollution-free fruit production standards, choose pesticides. General use of imidacloprid, matrine and other control of aphids, such as control of spider mites such as aphrodisiac, with streptomyces and other agricultural control of bacterial perforation, with multiple mildew control brown rot.
Author unit: Agricultural Bureau of Shouguang City, Shandong Province

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