How to manage citrus trees scientifically in early autumn
In mid-August, citrus fruits begin to swell rapidly, requiring a particularly large amount of water and fertilizer. For the trees with a lot of fruit, and the trees with yellow leaves due to lack of fertilizer, add a strong fruit fertilizer. Each plant (the amount of fertilization is calculated as 50 kg of fruit), 0.5 to 1 kg of compound fertilizer plus 0.2 kg of urea. To promote autumn shoot fertilizer, dig a circular fertilization ditch with a length of 1 to 1.2 meters, a width of 0.3 meters, and a depth of 5 cm at the periphery of the canopy drip line. In the dry season of autumn, when there is no obvious rainfall for more than 10 consecutive days, the orchard should be irrigated in time, and the irrigation should be carried out in the morning and evening. As a result, each tree should not be less than 100-150 kg each time. Autumn is a typhoon prone period. Before and after the typhoon, the drainage ditch should be cleared in time to prevent the accumulation of water from rot and yellowing.
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Cannulated screw is a common internal fixation device in orthopedic surgery.
Working process
During the operation, the Kirschner wire with the hole matching the hollow screw is first drilled into the bone of the fracture site, and then the hollow screw is screwed into the fracture site through the guidance of the Kirschner wire. Finally, the Kirschner wire is pulled out to complete the fixation of the fracture site. In many cases of fracture of the neck and femur, the healing cycle is long, and it usually takes about 30 months to remove the cannulated screws. At this point, the bone and the surface of the cannulated nail are closely connected and firmly connected in the nail path, which leads to defects easily generated by conventional nail removal methods, causing secondary injury at the fracture healing site and causing pain to the patient. Percutaneous cannulated screw internal fixation for femoral neck fractures has the advantages of small trauma, good healing, low rate of femoral head necrosis, and good stability.
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