Carbon dioxide is an important raw material for photosynthesis and an indispensable substance in the growth of vegetables. Therefore, in greenhouse cultivation, supplemental carbon dioxide has become an important means to increase the quality and yield of greenhouses. However, carbon dioxide gas fertilizer cannot be used blindly. If it is difficult to control the amount and method of use, it may cause damage to the crops and affect the normal growth of vegetables, resulting in reduced production. Therefore, we must do a good job of carbon dioxide gas fertilizer application in greenhouses, you can use carbon dioxide detector to check.
The key two points in the application of carbon dioxide gas fertilizer in greenhouses are the strict control of the amount of carbon dioxide application and the rational arrangement of application time. The appropriate concentration of carbon dioxide can promote photosynthesis, but too high (more than 0.5% -0.6% of the volume fraction of carbon dioxide in the air) will reduce photosynthesis efficiency. Therefore, the use of carbon dioxide detector to detect carbon dioxide content in greenhouses, can accurately know the carbon dioxide content in greenhouses, at the most appropriate time, increase greenhouse gas production for the appropriate amount of greenhouse application, so as to improve the efficiency of photosynthesis of greenhouse crops, increase production The effect of increasing income.
In addition to different greenhouse crops, as well as the different stages of crop growth, the amount of carbon dioxide required to apply is also different, such as from the colonization of the eggplant vegetables to flowering, carbon dioxide demand is small, generally do not need to apply. When vegetables are applied after flowering and fruit setting, this will have a significant effect on reducing flowering and fruiting, increasing fruit setting rate and promoting fruit growth. In order to apply refined carbon dioxide gas fertilizer, it is necessary to first understand the actual carbon dioxide situation in a greenhouse. The carbon dioxide detector is a professional instrument for measuring the carbon dioxide content of greenhouses. In the greenhouse application of carbon dioxide gas fertilizer, the carbon dioxide detector can play a role. Precise control of the effect, effectively improve the application of carbon dioxide gas fertilizer.
Welded Bed Plate For Flanges Of Ship Pipe
The flange welded single-sided seat plate is mainly installed on the top, side wall and bottom of the cabin or cabinet as the entrance and exit of the cabin or cabinet. Valves, accessories or pipes can be installed directly on the single-sided seat plate.
Flange welded single-sided seat plate is suitable for seawater, fresh water, oil, air and steam pipelines below 300 °C. The commonly used nominal diameter is 15~150 mm, and the nominal pressure is lower than 1.6 MPa. The shape of the single-sided seat plate is similar to the corresponding lap-welded Steel Flange.
Flange welded double-sided seat plates are generally used when pipelines pass through decks and tanks, and the two sides of the seat plate are respectively connected to valves, accessories or pipes.
Compared with the single-sided seat plate, the double-sided seat plate has an extra shoulder and double-sided mounting stud bolts. The outer diameter of the shoulder is 10~20 mm larger than that of the corresponding flange, and the thickness of the shoulder is 6~12 mm.
Its scope of application and other structural dimensions are basically the same as those of the single-sided seat plate.
The manufacturing and installation methods of the flange-welded double-sided seat plate are basically the same as the single-sided seat plate, but when the screw holes are drawn, the positions of the upper and lower screw holes of the seat plate must be staggered from each other and must not overlap; deck or bulkhead The diameter of the hole on the top is 2~3 mm larger than the diameter of the seat plate.
Welded Bed Plate For Flanges Of Ship Pipe,Flanges Of Ship Pipe Welded Bed Plate,Welding Base Plate Flange Of Ship Pipe,Ship Pipe Welding Base Plate Flange
Fuyuan Marine Accessories Co., Ltd , https://www.fymarineparts.com