The pre-cutting of the apple tree is a continuation and supplement of the winter shear, also called spring pruning and delayed pruning. The purpose is to adjust the structure of the tree, adjust the proportion of flowers and leaves, and balance the relationship between growth and results to achieve high quality, stable yield and high yield. 1. Time before flowering and re-cutting: It is generally suitable after fruit germination to pre-flowering. Premature karma and leaf buds are difficult to cut, and the nutrient consumption of tree storage is too late, affecting tree potential. . 2, the method of pre-flowering and re-cutting: 1 pair of short branches of flowers, can leave 2~4 flower buds for shrinking or sparse flower buds; 2 pairs of trees with large amount of flowers, to eliminate weak flower buds, and to retain short fruit branches Light-cut, long-flowered flower buds, flower-for-flowers, favorable for stable production next year; 3 pairs of long-stem flower buds on young tree-supporting branches, can leave 4~6 flower buds cut to achieve the front results The purpose of the branch is to promote the branch; 4 the extension head of the backbone branch, the bud flower buds left by the winter shears should be cut off the flower buds, replaced with the leaf buds to facilitate the expansion of the crown; 5 varieties with bud flower buds can be used, flowers For a long time, it can be properly cut off; 6 weak trees with large amount of flowers, in addition to paying attention to cutting to strong buds and strong branches, the flowering period adopts the method of "successful flowering", which has obvious effect on increasing fruit and rejuvenating tree potential. 7 For the results of the tree of the young year, try to keep the flower buds as much as possible. Do not break the head of the middle and long fruit branches. The long branches without the flowers, the long vegetative branches and the fruit tops should be shortened and shredded to benefit the coming year. More flower buds are formed; 8 pairs of overlapping branches, competing branches, introverted branches and over-stretched densely affected Erect branches, etc., should be cut off; 9 when cutting, only the flower buds on the flower buds should be cut off, do not hurt the fruit table, and the germination of the secondary shoots on the table, some of them can still form flower buds. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
Orthopedic external fixation system
The screw orthopedic is inserted into the bone near the fracture, and the fracture is fixed with an external fixator assembled by a chuck and a nail rod.
Indications
open fracture, nonunion, closed fracture with extensive soft tissue injury, fracture with multiple trauma, osteotomy and correction.
The use of orthopaedic external fixators is currently a superior fracture fixation technique, filling the gap between cast and internal fixation. At the same time, orthopedic external fixator has the characteristics of simple fixation method, stable, reliable and effective, and does not limit the joint movement, can be early ambulation advantages. It can reduce the time for the operator and is more friendly to the user. The external fixator was used together with the bone traction needle. In terms of the classification of orthopedic external fixators, it is mainly divided into four types: orthofix type external fixation, ilizarov type external fixation, ao synthes type external fixation,combined external fixator and common external fixators.
The external fixators in orthopaedics was used for reduction (shortening and overlapping displacement were corrected first, then lateral and angular displacement were corrected, and finally rotational and separation displacement were corrected; If closed reduction is difficult, open reduction can be considered, but the separation of soft tissue and peeling of periosteum should be minimized.
The selection of the insertion site.According to the anatomical characteristics of the soft tissue at the insertion plane, the important nerves, vessels and tendons should be avoided; The ideal entry point is the part of the bone close to the subcutaneous, in a word, generally choose the skin and bone between the muscle soft tissue is the weakest point into the needle. The installation shall facilitate observation and control of soft tissue damage, and permit any surgery that may be required, such as repair and reconstruction, dressing change, skin grafting, or bone grafting." According to the location of the bone, different diameters of the threaded needle were selected. Removal was performed after completion of late treatment.
Orthopedic External Fixator,Orthopedic Fixator,External Fixation,External Fixator Jiangsu Aomed Ortho Medical Technology Co.,Ltd , https://www.aomedortho.com