1. The farmyard fertilizer is not mixed with alkali ash, lime nitrogen, calcium magnesium phosphate, and other alkaline fertilizers. Because the main component of human and animal urine is nitrogen, if it is mixed with a strong alkaline fertilizer, it will neutralize and fail.
Doing citrus fertilization "five immiscible"
2, superphosphate can not be mixed with grass ash, lime nitrogen and other alkaline fertilizers. Otherwise it will reduce the effectiveness of phosphorus. Phosphate rock powder, bone powder and other insoluble phosphate fertilizers can not be mixed with alkaline fertilizers such as grass ash and lime nitrogen. Otherwise, insoluble phosphate fertilizers will be harder to dissolve and crops will not be able to absorb and use them.
3, calcium magnesium phosphate fertilizer and other alkaline fertilizers can not be mixed with ammonium nitrogen fertilizer. Because alkaline fertilizers and ammonia nitrogen fertilizers such as ammonium bicarbonate, ammonium sulfate, ammonium nitrate, ammonium chloride, etc., will increase the volatility of ammonia, thereby reducing fertilizer efficiency.
4. Unripe farmyard fertilizers cannot be mixed with ammonium nitrate. Because unfamiliar farmyard manures must be decomposed and rotted before they can be used by crops. If mixed with ammonium nitrate, the unripe farmyard manure loses nitrogen during decomposition and rot, so it cannot be applied together, otherwise both nitrogen will be damaged and the fertilizer effect will be reduced.
5. Chemical fertilizers cannot be mixed with bacterial fertilizers. Because chemical fertilizers have strong corrosiveness, volatility and water absorption, if they are mixed with rhizobia and other bacterial fertilizers, they will kill or inhibit viable bacteria and make bacterial fertilizers ineffective.
The generic name of VTM Virus Sampling Tube is a single-use virus sampling tube, which is generally used for the detection and sampling of infectious pathogenic microorganisms in disease control departments and clinical departments. It is suitable for detection and sampling of influenza viruses (including general influenza, highly pathogenic viruses, H1N1 influenza virus, etc.), hand, foot and mouth virus, new coronavirus, measles and rubella and other types of viruses. VTM virus sampling tube can also be used for detection and sampling of Mycoplasma, Chlamydia and Ureaplasma urealyticum.
The virus and related samples in the VTM virus sampling tube should be stored and transported within 48 hours in a refrigerated state (2-8°C). Viruses and related samples can be stored for a long time in -80℃ environment or liquid nitrogen environment. The virus can maintain the activity of the virus in a lower temperature range, reduce the speed of virus decomposition, and improve the positive rate of virus isolation.
The VTM virus sampling tube is generally equipped with a disposable flocking swab. From the appearance point of view, the flocking swab is white and soft. Using this soft brush during the sampling process will make the user feel no foreign body, and it is suitable for different Partial sampling person. Moreover, the flocking swab is designed with a breaking point that conforms to the length of the sampling tube and the natural orifice of the human body, which is not only convenient for sampling but also convenient for transportation of the specimen.
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