During the midwinter season, how to manage the greenhouse vegetable before, during and after the snow is particularly important. It is summarized as follows for the reference of farmers' friends. First, pre-snow management measures 1. When it is cloudy, it is necessary to uncover the grasshoppers and fight for precious scattered light. The time must be covered by one hour before the cover of the weather. 2. The application of organic fertilizer can increase the heat capacity of the soil, buffer the cooling brought about by the loss of heat from the cloudy days, and can also promote the ability of the root system to improve cold resistance. 3. Moderate water control is very important to reduce the relative humidity of indoor air, and at the same time, it can create a bottom-slung, dry topsoil environment. Second, snow management measures 1, when the snow should be on a good grass rake, timely cover the greenhouse with cold film, in the front edge of the greenhouse with grass rake and then block a layer of cold skirts, the buffer room close tightly closed to prevent the cold wind to enter. 2. Photosynthesis of vegetable crops is very weak when snowing, and there are few photosynthetic products synthesized. In order to reduce respiratory consumption, the temperature of night greenhouses should be 2°C~3°C lower than the nighttime of sunny days. 3. In the case of continuous cloudy snow days, the respiratory consumption of vegetables is greater than photosynthesis, and a large amount of harmful gases such as carbon dioxide will accumulate in the greenhouse. Therefore, in the case of more than 3 days of continuous snowfall, it is necessary to release the wind after snow stopped at noon. Hours. Third, post-snow management measures 1, after the snow to remove the film on the snow cover, increase the transparency and the amount of light; as long as the temperature does not cause a sharp decline after the exposing of the shed temperature, it should be revealed every day. 2. When the sun comes out, if the leaves appear wilting, some grasshoppers should be put down for shading, and they can be placed one at a time. After the wilting is resumed, the draft is drafted again. If wilting reappears, the hoe can be put down again. This repeated several times, the general wilting can be restored. 3. If disease has occurred in the greenhouse, conventional spraying will not only increase the humidity in the greenhouse, but also increase the severity of the disease. It can be prevented by the use of smoke aerosols such as chlorothalonil and sulfasalazine. 4, in order to prevent vegetables from freezing, should promptly loosen the soil, the appropriate amount of topdressing quick-acting fertilizer can be used 0.2% potassium dihydrogen phosphate solution foliar spray to promote vegetable growth.
Germany imported beads
Imported French lens
mould Die-casting Eight edge type Revolving arm
Optional emergency power supply≥3 hours
The main features:
1)Ideal cold light effects
Using the new LED cold light source, ensure energy saving and environmental protection and long service life up to 80,000hours and more.
The temperature increase of surgeon`s head below 1℃. LED do not engender infrared ray and ultraviolet radiation, without the temperature
rise and tissue damage caused by halogen shadowless light, also it can accelerate the wound healing after surgery, and without Radiation pollution.
With color temperature constant and soft, LED is very close to the sunshine.
1) Excellent shadowless effect
Lamp with the most scientific radian and Multi point light source design, ensure better uniform illuminance. When the lamps are partially occluded,
also can achieve perfect shadowless effect.Lamp panel radius of gyration ≥182cm, the lamp can be pulled to vertical floor, convenient to any angle illumination.
2) Excellent deep lighting
It is based on modularize method by Computer Aided Design, focused to irradiating with more beams of LED. It produces the deep lighting which beams
more than 1200cm,the illumination of center up to 180,000Lux or more, and offer the color temperature that can be adjusted from 3700K to 5000K which
is close to sunshine. Absolutely, it really reflects the color of human tissue and satisfied by all kinds of operating light needs.
3) Advanced control system
The use of liquid crystal display button control, to meet the needs of the medical staff of different patients with the brightness of the operation.
It offers illuminance memory function.
It does not effect using when a single circuit or one bulb is broken.
4) Universal suspension system
Rotating arm, a new type of alloy material is made of eight edge type.
Balanced system using imported arm module, more than 5 group universal joints, every cantilever must has more than 3 joints which can be rotated in 360°,
The structure is light, easy to manipulate, accurate positioning, can provide the maximum range of regulation.The equipped with fatigue correcting unit and
fix position hand handle device, easy to fix position after long time use.
5) Modern laminar lamp
The thickest part of lamp-chimney is not more than 10cm.
The lamp-chimney is made of ABS, The handle on the central of lamp can be detachable, can take high temperature (≤ 134°C) sterilization treatment,
easily adjust, flexible fixed.
Single Dome Operating Light,Operation Theatre Lights,Single Head Operating Light,One Head Operating Lights Shandong qufu healthyou Medical Technology co.,Ltd , https://www.kangerjian-medical.com
