The new melon pad made by Beijing Agricultural Technology Extension Station solves the problem of “two-sided melon†with yellow spots on the surface of watermelon. Generally, it can increase 800 yuan per mu.
This year, the greenhouse watermelon planted by Guong Nongzhu, a small jewelry village in Beiwu Town, Shunyi District, Beijing, put a transparent “plastic sheet†under each melon. The plastic sheets are a little raised around, and a small watermelon can be comfortable. Lying on the ground. Open a small watermelon, the color of the bottom is bright and the color is green.
At present, most of the small watermelons grown in the greenhouse in Shunyi District are cultivated by ground climbing, and small watermelons have yellow spots on the shade. In the middle and late stages of fruit growth, each watermelon should be manually turned over, so that the watermelon fruit is evenly illuminated on both sides, thereby reducing the decay rate of the watermelon and improving the appearance quality. However, it takes time and effort to turn the melons, and it is easy to damage the watermelon plants. Generally, the melon farmers do not take measures, and the price is lower than the watermelons planted by the vines. In order to increase the income of watermelon growers, the Beijing Agricultural Technology Extension Station produced a new type of special melon pad for watermelon, which completely solved the problem of “planting two sides of melon†in the facility.
Don't look at this mat. It is a product that has obtained national patents. It is made of PVC material. The size is also designed according to the small watermelon varieties that are currently planted. Even the small protrusions above are designed with light reflection angle. At the end of pollination, in the process of planting the melon, the “melon pad†is placed in the lower part of the melon, and the watermelon fruit can be separated from the ground surface without turning the melon, which plays the role of moisture-proof ventilation, so that the lower part of the watermelon fruit can fully receive the sunlight. The color of the surface of the fruit is uniform, which improves the commerciality of the fruit of the watermelon, and can effectively prevent the infection of the surface of the watermelon fruit by the pests and diseases.
A melon down, Zhu Yongheng counted, this new type of melon pad can be reused, each cost 0.4 yuan, can be used for 5 to 8 years, about 2400 per acre, the cost is recovered in the same year. Each melon has 1.5 to 2 kilograms, and each kilogram can sell 0.2 to 0.3 yuan more than in the past. Generally, it can increase 800 yuan per mu.
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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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