Don't despise apple orchard management in January
January was the coldest time of the year, and the apple tree was in deep dormancy. Do a good job of orchard management focusing on shaping and pruning, cultivate standardized tree shape and good tree structure, strengthen winter protection, improve the ability of tree winter, and do basic orchard management. Plastic trimming 1. Young tree shaping. The saplings planted in that year are set to dry at 0.8 to 1 meter; later, depending on the strength of the center, they can be cut and thrown. 2. The young tree is trimmed with a slender spindle shape. The young tree within 3 years old is cut into bare rods without leaving branches to increase the step difference. The center of the young tree has been sparsely stripped to leave short piles (1 to 2 cm) , Cut into oblique horse-ear shape to reduce the growth potential of new branches again, you can increase the branch difference. 2. Pruning of mature trees (big trees in full fruit period). It is mainly sparse, without short cuts, continuous long release, uniaxial extension, timely retraction, and three-dimensional results. The happy shape is mainly composed of loose drooping branches, which are laterally, obliquely and drooping evenly; the slender spindle tree leaves only small branches. Trunk painted white Before the soil freezes, the whitening agent can be used to brush the trunk and the main branches, which can reduce or avoid the daily burning and freezing damage of the fruit trees and eliminate the overwintering pests. The preparation ratio of the white coating agent is: 5 kg of quick lime, 1 kg of table salt, 0.15 kg of animal oil, 0.5 kg of stone sulfur mixture stock solution, and 12.5 kg of water. Pest Control 1. Clear the garden. It is necessary to timely remove the diseased dead fruits from the tree, and clear the fallen leaves, diseased and diseased branches, dry and dead branches, weeds, wastes, etc. out of the orchard, and burn them or bury them deeply to eliminate the dormant diseases and insects in winter. 2. Shave the old skin. The trunk, branches, and old bark of the tree are wintering places for disease and insects, and they hide many kinds of diseases and insects. Place bedding around the trunk, collect all the bark and wintering insects that have been scraped, and take them out of the orchard to burn them or bury them deep. When scraping, be thorough and leave no gaps. After the skin is scraped, the trunk is painted white. 3, cut off the pests. Combined with winter shears, cut dry and dead branches and disease and insect branches, and bring them out of the orchard for centralized burning, which can prevent a variety of diseases and insect pests, reduce the base of diseases and insect pests, and reduce harm in the coming year. Disclaimer: Some articles on this website are transferred from the Internet. If you have third party legal rights, please inform this website to deal with them. phone
Maxillofacial fixation system -- micro-plate for cranial and maxillofacial fracture fixation, designed for the surgical treatment of maxillofacial trauma fractures, suitable for the forehead, nose, orbit, zygomatic, maxillary region, and pediatric craniofacial bones.
The system is an orthopedic surgical instrument for neurosurgical tools. The maxillofacial fixation system includes micro-plates, straight plates, L-shaped plates, T-shaped plates, Y-shaped plates, double Y-shaped plates, H-shaped plates for cranial and maxillofacial fractures. The product range is complete, covering three-dimensional titanium mesh, self-drilling rotary bone screws, anatomical orbital floor plates, orthodontic nails, etc. However, the facial anatomical structure is special, and the screw plate needs to be placed away from the fracture line and avoid important anatomical structures such as nerves and teeth roots. Therefore, the specifications of the screw plate system are required to be as diverse as possible in order to be used in different bone structures, such as different radian, length, and number of screw holes. The bone plates forcranial and maxillofacial fractures are mainly divided into 1.5mm, 2.0mm and 2.4mm systems.
Titanium (including pure titanium and titanium alloy) is the most common material for hard tissue implants. Its elastic modulus and tensile strength are higher than those of human bone, and it is better than other metal materials such as nickel-titanium alloy and cobalt-chromium alloy in terms of biocompatibility and corrosion resistance. Our maxillofacial plate is made of titanium, and the self-tapping screws are mainly made of titanium alloy.
Jaw fractures include maxillary fractures and mandibular fractures. According to whether the fracture trauma is exposed, it can be divided into open fracture and closed fracture. Trauma is the most common cause of jaw fracture, which usually includes hit, traffic injury, fall injury, firearm injury, and a few iatrogenic injuries. All are caused by external forces acting directly or indirectly on the maxillofacial region. With the popularization of motor vehicles, the proportion of jaw fractures caused by traffic accidents has increased year by year, which has become the main cause of jaw fractures. In addition, neoplastic lesions in the maxillofacial region often lead to pathological jaw fractures.
In summary, maxillofacial fixation system has been widely used in clinical maxillofacial surgery, plastic surgery and ENT, and has a relatively mature market.
Titanium Plate,Rectangular Plate,orthognathic surgery,oral and maxillofacial Jiangsu Aomed Ortho Medical Technology Co.,Ltd , https://www.medthofixation.com