A mini centrifuge is a laboratory equipment that is used to separate samples based on their density and size. It is a compact and portable device that can fit on a benchtop or in a small space. Mini centrifuges are commonly used in molecular biology, biochemistry, and clinical laboratories for various applications such as DNA extraction, protein purification, and cell separation. They typically have a capacity of up to 2 mL and can spin at speeds of up to 15,000 rpm. Mini centrifuges are ideal for small-scale experiments and are often used in educational settings or for fieldwork. Mini Centrifuge,Mini Portable Centrifuge,Mini Centrifuge Machine,Mini Laboratory Centrifuge Lachoi Scientific Instrument (Shaoxing) Co., Ltd. , https://www.lachoinst.com
1, bogey on the surface of the application of
Urea is applied to the surface, and it can be absorbed by the crop after 4~5 days of transformation at room temperature. Most of the nitrogen is volatilized during the ammoniumification process, and the utilization rate is only about 30%, if it is high in alkaline soil and organic matter. The soil is applied and the loss of nitrogen will be more. Therefore, nitrogen cannot be applied on the surface.
2, bogey and mix ammonium bicarbonate
After urea is applied to the soil, it is converted into ammonia to be absorbed by the crop, and its conversion rate is much slower under alkaline conditions than under acidic conditions. After the ammonium bicarbonate is applied to the soil, it has an alkaline reaction with a pH of 8.2 to 8.4. When mixed with ammonium bicarbonate and urea, the rate of conversion of urea into ammonia is greatly slowed down, which is likely to cause loss of fastactivin and loss of volatilization. Therefore, urea and ammonium bicarbonate are not suitable for mixing or simultaneous application.
3, avoid the application of
The ideal application method is to first apply organic fertilizer (such as human and animal waste, straw, animal residue, slaughterhouse waste, compost, manure, manure, etc.), and then mix urea, superphosphate, potassium chloride and other fertilizers. use.
4, bogey immediately after applying urea,
Urea is an amine nitrogen fertilizer, which must be converted into ammonia nitrogen after application to be absorbed and utilized by crops. In the process of transformation, due to different soil, water and temperature conditions, the time is long and short, generally it takes 2 to 10 days to complete. If the urea is applied immediately after application or the dry land is applied before heavy rain, the urea will be lost immediately.
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