Edible mushroom nutrition

In the growth and development stage of edible fruit body, especially after harvesting the first tidal mushroom, it is a very effective measure to increase the yield of edible fungi and improve the quality. However, if it is used improperly, it will be counterproductive. The following key technologies should be mastered when supplementing nutrition. 1. Selection of scientific methods of supplemental application of edible mushroom nutrition methods such as spraying, perfusion and soaking. The most common method is to formulate a certain concentration of nutrient solution, and spray water to spray on bacteria bed, fungus tube or bacteria block. When spraying the young buds, pay attention to spraying the nutrient solution around the area without buds or mushroom buds, and then rinse the fruit bodies with fresh water. It is best to spray the nutrient solution when the strain is at low tide. The bacteria, stumps, and sections of wood can also be soaked with nutrients so that they can be removed after the nutrient solution is sufficiently absorbed in the prepared nutrient solution. The specific soaking time must be determined by the type of infusion and weather conditions. This method is generally performed after each tidal mushroom is harvested. The inoculation method can also be used to supplement nutrition on the bed of bacteria, that is, the bed cover soil is opened, the funnel is inserted into the material, and the nutrient solution is poured into the soil. The distance from the infusion hole is 10 cm. The amount of fluid per hole depends on the thickness of the material. Generally, 5 ml to 10 ml can be used. 2. Alternate supplementation and application of different nutrients for long-term use of only a certain kind of nutrition can not meet the various nutrients required for the growth and development of edible fungi. Therefore, when supplementing nutrition, various nutrients should be applied alternately or mixedly. The nutrient solution that adds nutrients is generally applied first, and then an efficient nutrient solution or a high-efficiency regulator is added. 3. Accurately grasp the amount of nutrition once applied, if too much, will cause the culture material to be too wet, the permeability will be worse, and even inhibit the growth of mycelium, which will play a destructive role in the growth of mycelium; It is necessary to accurately determine the application concentration based on the dryness of the culture medium and the types of edible fungi. If the humidity is high, the concentration of the supplemental nutrition solution can be increased to reduce the amount of water added. In addition, after the application of nutrient solution to increase ventilation, to lose a small amount of water, to prevent the material surface or air humidity is too large and damage the growth of mycelium or fruiting bodies. 4. Strictly control the application of organic fertilizers. First, the applied organic fertilizer should be fully cooked, must not contain bacteria and eggs, and strictly prevent the application of organic fertilizer or tanning; second, adhere to some of the fungi should not apply organic fertilizers No, it is necessary to use it, and it can only be boiled for a period of time. The dipping solution is diluted and applied. In addition, the application of soy milk juice, potato juice and other plant extracts should be ready for use, can not be placed for a long time, to prevent spoilage, and should strictly control the application concentration. 5. Pay attention to the environmental impact Generally, when the temperature is higher than 25°C, many bacteria cannot easily differentiate into fruit bodies, and at this time, the application of nutrition is stopped. Glucose solution, soymilk juice, human fecal urine, etc. should not be applied under the condition that the temperature is higher than 2O°C. If the bacteria bed, fungus tube and bacteria block have been infected with bacteria, bacteria must be removed before they can be supplemented with nutrients, otherwise it will increase the degree of contamination of the bacteria.

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The intelligent analysis of intelligent high-definition cameras is mainly aimed at accurate analysis, judgment and alarm of common camera failures such as black screen, blurring, out of control PTZ, picture freezing, and video signal interference such as scene change, items left/disappeared, etc.
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Lamp panel
The lamp panel is divided into ordinary infrared lamps (Dingyuan and Guanglei) and array lamps. The array camera is also divided into 1W, 2W and 3W. Therefore, when choosing infrared lamps, if it is an ordinary infrared lamp, try to choose Dingyuan and 3W array lamps. Since the appearance of infrared lamps is generally invisible, some cottage cameras are filled with Guanglei and 1W array cameras are filled with 3W array cameras. Therefore, try to choose a large brand when choosing cameras.
Maximum Aperture
The real value of the maximum aperture is to improve the light intake under low light conditions, so as to achieve the best exposure combination. In general, the ability to visualize the lens is not required for shooting landscapes. In addition, the lens caliber is not required for shooting landscapes except in particularly dark places. However, when the 70-200mm zoom lens is equipped with a 2-fold zoom lens to make the telephoto section become 400mm and AF is used for automatic focusing, it is better to choose a lens with the largest aperture of F2.8. Large aperture is conducive to accurate focusing in dark conditions. When shooting people with a large aperture lens, even in places where the light is weak, the handset can also use natural light to shoot. In addition, the lens with the largest aperture can bring fast shutter speed, so sports photography also needs a large aperture lens.
Another reason for requiring the lens aperture to be large is to be able to visualize the background freely and ensure the quality of visualization. When the aperture of the lens with the maximum aperture of F1.4 is reduced to F2, both the imaging quality and the blurring quality of the background are better than those of the lens with the maximum aperture of F2. Therefore, it is of great value to reduce the aperture of a large aperture lens by one stop. Any photographer should be good at using the lens.
focal length
The first thing to pay attention to when selecting a lens is the focal length of the lens. In fact, focal length is a matter of perspective. Different focal lengths and perspectives are different. In addition, users should be clear about what is the main purpose of buying lenses? Is it for scenery or people. As we all know, it is better to use a wide-angle lens when shooting landscapes, and a telescopic lens when shooting people. Therefore, you should first decide the focal length of the lens you want to buy according to the purpose of photography.
The best focal sections for shooting scenery are 24 mm wide angle focal section and 200 mm telescopic focal section (both are based on 35 mm specifications, the same below). When the wide-angle focus segment of the standard zoom lens evolves from 28mm to 24mm, the viewing angle becomes larger, and the range of scenery that can be stored is greatly expanded. Generally speaking, the maximum aperture of the lens is not required for shooting landscapes. If you are mainly shooting landscapes, a wide angle focal length of 24mm is basically enough when you select a zoom lens. As for the telephoto section, it must be at least 200mm. If the telephoto section is 300mm or 400mm, it is more ideal, and the degree of freedom will be greatly improved. The telephoto focus segment of traditional zoom lens is 300 mm, which is 450 mm for digital SLR. The focal length has been expanded by 1.5 times, which makes it more enjoyable to use. This is the value of digital SLR. The wide-angle focal section of the digital special ultra wide-angle lens produced is generally 12mm, equivalent to 18mm of 35mm, which is nearly 1.5 times larger than the 28mm focal section of 35mm, thus greatly widening the left and right range of the scenic scene.
The best focal length for shooting people is 85mm. In terms of 35mm standard, 85mm focal length is basically used as the standard for shooting characters. The portrait taken by the 85mm focal section is basically close to the picture effect taken by the medium frame camera. It is not only suitable for the distance, but also the face of the person looks very natural. The distance between the camera and the person being photographed can basically be kept at the normal speaking distance. The 85mm focal length can also effectively blur the background and prominent characters. In order to obtain good visualization effect, the lens with the largest aperture should be selected. The 85mm focal length is about 135mm on the digital SLR. Although the sense of distance of the shot is a little weak, it is basically OK, so the focal length of the person lens should be at least about 85mm.
A 100mm macro lens is enough for traditional SLR to shoot flowers. The 100mm macro lens can be used for equal magnification photography, which can make the flowers very large. However, when taking equal magnification photography or near equal magnification photography, due to the depth of the long focus scene, it is easy to shake, so anti shake measures should be considered when taking photos. From this point of view, 50mm macro lens is easier to use on digital SLR.

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