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. Biomed Vtm Kit,Vtm Test Kit,Saliva Collection Tube,Virus Sample Collection Tube Jilin Sinoscience Technology Co. LTD , https://www.jlgkscience.com
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.
Technical measures to increase the yield of machine inserted rice
There are three main strategies to boost total rice production: expanding the planting area, shifting from single-season to double-crop rice, and increasing yield per unit. Among these, improving rice yield is the most critical factor for increasing overall production, enhancing grain production efficiency, and boosting farmers' income. In recent years, the adoption of mechanized transplanting technology has shown promising results. This method saves labor, time, and costs while increasing productivity and profitability. However, improper technical implementation can negatively impact the effectiveness of machine transplanting. To improve the success rate of mechanized rice transplanting, it's essential to implement the "Five Key Steps" effectively: cultivating quality seedlings, preparing a suitable field, using the right machinery, ensuring proper transplanting, and maintaining good field management.
First, cultivating high-quality seedlings is crucial for successful mechanized transplanting. The quality of seedlings directly determines the success of the entire process. Good seedlings should be 18–20 days old, with 3–4 leaves, a stem width of 2–2.5 mm, 12–15 roots per plant, and a height of 12–15 cm. They must be uniform in size, neatly arranged, and have 2–3 seedlings per square centimeter.
To achieve this, selecting the right variety is important—opt for stable, high-yield, disease-resistant, and lodging-resistant strains. Choosing the right location for seedling beds is also key: select well-drained, fertile land with easy access to water and transportation. A 1:10 or 1:100 ratio of seedbed to field is typically recommended. Proper preparation of the bed and accurate sowing rates (around 180–200 grams per mu) are essential. Finally, meticulous care, including proper irrigation, fertilization, and pest control, ensures strong, healthy seedlings.
The second step involves preparing the field. A well-prepared field is the foundation for successful rice growth. The soil should be finely tilled, level, and free of debris, with a maximum height difference of no more than 3 cm across the field.
Next, using the right machine is vital. The transplanter must be properly maintained, adjusted, and operated. Adjustments should ensure an appropriate spacing of 18,000 holes per acre, with 3–5 seedlings per hole. The planting depth should be between 0.5 and 1 cm, avoiding floating or falling seedlings. During operation, maintain a steady speed, avoid frequent stops, and keep the path straight. Avoid working in heavy rain, cold weather, or muddy conditions, as these can cause blockages or poor performance.
The fourth step is the actual transplanting. The quality of the transplanting directly affects yield. Ensure that the leakage rate is below 5%, the damage rate under 4%, uniformity above 85%, and the floating rate less than 3%.
Finally, effective field management after transplanting is crucial. This includes managing water levels—keeping it shallow during the initial stages, applying fertilizers strategically, and performing timely drying. Other key practices include seedling fertilizer application, chemical weed control, and regular monitoring for pests and diseases. These steps ensure that the transplanted seedlings grow strong and healthy, leading to higher yields and better returns for farmers.