A large amount of water-soluble fertilizer is a water-soluble fertilizer that combines various elements. It contains a large amount of various elements and has a comprehensive nutrition, which can provide the necessary nutrients for plants. And he is able to dissolve quickly in water, which makes the plant absorb the elements better.
In general, as a large amount of water-soluble fertilizer, it can be fertilized by foliar application, soaking seeds, roots, fertilization, irrigation, irrigation, drip irrigation, etc., when fertilizing, saving water and saving fertilization, but also plant absorption. Foliar fertilization, the fertilizer is first diluted and dissolved in water for foliar spraying, or dissolved in water with non-strong alkali strong acid pesticides for uniform foliar application, through the leaf stomata into the interior of the plant, plants can be absorbed through the leaves , greatly improving the efficiency of fertilizer absorption and utilization.
In addition, in the process of fertilization, it is necessary to combine certain characteristics of water-soluble fertilizers to master certain fertilization techniques.
Avoid direct application, and take a second dilution method. Because the water-soluble fertilizer is different from the general compound fertilizer, the farmers can not use the conventional fertilization method, resulting in uneven fertilization, the phenomenon of burning seedlings, seedlings and seedlings weakening, secondary dilution to ensure uniform fertilizer, and improved fertilizer utilization. rate.
It is also necessary to strictly control the amount of fertilizer applied. A small number of times is the most important principle to meet the characteristics of plants that continuously absorb nutrients. The water-soluble fertilizer has higher nutrient content than the general compound fertilizer, and the amount is relatively small. Because of its fast-acting ability, it is difficult to remain in the soil for a long time, so the amount of fertilizer should be strictly controlled.
So what are his technical standards as a water-soluble fertilizer for a large number of elements?
The new standard for large quantities of water-soluble fertilizers today is generally:
Large amount of elements, g/L ≥ 500
Trace element content, g/L ≥ 5
Water insoluble content, g/L ≤ 50
Ph value (1:250 dilution) 3.0-7.0
The content of a large amount of elements refers to the sum of the contents of N, P2O5, and K2O, and the single nutrient content of a large amount of elements is not less than 60 g/L.
The trace element content refers to the sum of the contents of copper, iron, manganese, zinc, boron and molybdenum. The product should contain at least two trace elements. Single trace elements with a content of not less than 1 g/L should be included in the trace elements.
A large number of water-soluble fertilizers have many advantages such as nutrient, complete dissolution, high absorption, safety and convenience. The effect is obvious and the speed is fast. Moreover, the impurities of a large amount of water-soluble fertilizers are few, and the concentration is very convenient to adjust, even if Young seedlings are also safe, so don't worry about causing bad consequences such as burning seedlings. The trace elements in the water-soluble fertilizers of a large number of elements exist in a chelated state, and the absorption and utilization efficiency is about forty times that of the inorganic trace elements, and there is no need to worry about the symptoms of crop defects.
This article URL: How to use a large amount of water soluble fertilizer and precautions
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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