Do a good job in seed treatment, prepare nutrient soil and other seedling measures, and cultivate no disease and insects and strong melon seedlings. Seedling management: including seedbed temperature regulation and refining, regulating humidity, regulating space and seedling fertilization techniques.
Field cultivation and management site selection: It is best to choose the former crop that is not melon crop, well drained, and rich in organic loam. Implantation of seedlings: When winter melon grows to 2 to 3 true leaves, it can be transplanted, and the planting specification is 0.7-0.9 m.
Fertilizer management of winter melon requires a large amount of fertilizer. The base fertilizer should be applied. When the weight of the melon is 4 to 5 kg, the topdressing should be applied. After the melon is put on the shelf, the water requirement is gradually increased. It is necessary to pay attention to the frequent watering and keep the soil moist. Care should be taken to eliminate stagnant water during the rain.
Whole vines should be removed from the side vines in time, and all side vines should be removed before the fruit is placed; when the vines grow to 60 cm, the new soil is pressed at 6 to 7 places, and the next 4 places are pressed again. Riding the vines: using the scaffolding method or the skeleton dragon root method. Artificial pollination and melon, hanging melon: artificial pollination from 8 to 9 in the morning, staying in the 18th to 30th of the main vine, and hanging the melon in time when the melon grows to 2 kg. Topping: Generally, in the 8th to 10th post of the melon, the topping and the side vines are removed to promote fruit growth. Pay attention to pest control: to prevent epidemics, blight and thrips.
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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.
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