The method of applying fertilizer solution to the plant to obtain nutrient elements through the leaves is called foliar fertilization. For the purpose of absorbing the foliage, the nutrient required by the crop is directly applied to the foliar fertilizer, which is called foliar fertilizer. In recent years, with the development of fertilization techniques, foliar fertilization has been rapidly promoted and applied as a fertilization measure for strengthening the nutrition of crops and preventing certain deficiency traits. Practice has proved that foliar fertilizer is one of fertilization technologies with rapid fertilizer efficiency, high fertilizer utilization, and low dosage. Foliar fertilization allows nutrients to enter the body directly from the leaves, participate in the metabolism of the crop and the synthesis of organic matter, and is therefore more rapid and effective than soil fertilization. Therefore, it is often used as an effective measure for the timely treatment of crop deficiencies. When fertilizing, it is also possible to apply spraying in stages according to the crop growth period, seedling conditions, and actual conditions of soil fertility, and to give full play to the characteristics of rapid response to foliar fertilizer so as to ensure normal growth of the crop under suitable fertilizer and water conditions. Developed to achieve high yield and quality. However, only the correct application of foliar fertilizer technology can give full play to the effect of foliar fertilizer production increase. Therefore, the problem to be paid attention to when using foliar fertilizers is: Selecting the appropriate spraying concentration The foliar fertilizer concentration is directly related to the spraying effect. If the solution concentration is too high, the crop leaves may burn after spraying; the solution concentration is too low. Increased workload, but also failed to supplement the nutritional requirements of the crop. Therefore, due to fertilizer, because of different crops in the application, according to local conditions and symptomatic preparation. Select the appropriate spray method to prepare the solution to be uniform, spray the fog to be uniform, spray times to see if necessary. To master the foliar fertilization during spraying, it is necessary to apply the nutrient elements according to different growth and development stages of various crops, and to select the most necessary and most urgent spraying of crop nutrient elements in order to achieve the best results. Choosing the right spraying time The effect of the foliar fertilizer application is directly related to temperature, humidity, wind force, etc. The best choice for foliar spraying is to choose no-wind, cloudy or high-humidity, low-evaporation 9:00 am In the past, it was most appropriate to proceed after 4:00 pm, and if it rained after 3-4 hours after spraying, additional sprays were required. Choosing the appropriate spraying site The upper, middle and lower leaves and stalks of the plant are different in their ability to absorb external nutrients because of their different metabolic activities. Therefore, appropriate spraying sites should be selected. Add additives in the foliar spray fertilizer solution, add additives, improve the adhesion of fertilizer solution on the plant leaves, and promote fertilizer absorption. Combined with soil fertilization, because the roots have larger and more complete absorption systems than leaves, for large amounts of nutrients such as nitrogen, phosphorus, and potassium, it has been determined that more than 10 times of foliar fertilization can achieve the total amount of nutrients absorbed by roots. . Therefore, foliar fertilization cannot completely replace the roots of crops and must be combined with root fertilization.
Pediatric Plate
Pediatric series consists of elastic nail,correction plate,pediatric proximal femoral locking plate,LC-DCP locking plate,reconstruction locking plste,T locking plate.
The special manifestations of pediatric fracture
(1) In children, soft tissue is loose, fascia is elastic, swelling after fracture is early, wide range, and often plaque.
(2) Pay attention to subperiosteal fracture, longitudinal percussion pain and local tenderness to consider the possibility of fracture.
(3) Children can be fever, generally below 38 degrees, caused by hematoma absorption.
(4) Identify the ossification center and epiphyseal plate, and add normal side control if necessary.
Characteristics of pediatric fracture repair
(1) The fracture heals quickly, and the younger the age, the faster the healing.
(2) The healing time of fracture is related to fracture site, fracture type, treatment method and individual situation.
(3) Joint stiffness occurred less.
(4) Have a certain shaping ability, the younger the age, the stronger the shaping ability, but the rotation deformity, the angular deformity inconsistent with the joint activity is more difficult to shape itself.
(5) Metaphyseal and shaft fractures due to hyperemia stimulate epiphyseal plate overgrowth, can cause temporary acceleration of limb growth, femur bone.It can overgrow by 0.8-2cm.
Principles of fracture treatment
The first is reduction, fixation, functional exercise. The principle is no longer to damage the epiphysis and epiphysis plate causing growth and development disorders. Manual reduction, plaster fixation, traction. Closed reduction and internal fixation. Open reduction, internal fixation (elastic needles, Kirschner needles, absorbable nails, absorption rods, various steel plates, external fixation brackets, hollow screws, etc.).
bone fracture,fracture surgery,internal fixation,internal fixation of fracture
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