With low winter temperatures and weakened microbial activity, the fertilizers that need to be converted have a slower effect, while the winter sowing crops require sufficient fertilizers. The solution to the conflict is to chase the available fertilizer.
Nitrogen fertilizer can be used for ammonium bicarbonate. Phosphate fertilizer should use superphosphate as possible. Potassium fertilizer can be used as potassium fertilizer (but potassium sulfate should be used during late growth stage for potato crops such as potato and tomato), and 45% can be used for application of compound fertilizer. Compound fertilizer, farmyard manure available human fecal urine. This is because, compared with urea, ammonium bicarbonate belongs to ammonium nitrogen fertilizer and can be directly absorbed and utilized by crops after application to soil, unlike urea (which belongs to ammonium ammonium fertilizer and needs urease secretion from urea bacteria in soil. The transformation into ammonium nitrogen can only be absorbed by the root system.) Fertilizing is affected by the low temperature and the effect of the fertilizer is slow to affect crop growth.
Superphosphate contains 14% to 20% of effective phosphorus pentoxide (80% to 95% of which is soluble in water). It is a water-soluble, quick-acting phosphate fertilizer, and its fertilizer efficiency is faster than that of calcium magnesium phosphate fertilizer. However, we must pay attention to the greenhouse vegetable is best not to use ammonium bicarbonate, and switch to 45% ternary compound fertilizer to prevent ammonia harm. Phosphorus is easily absorbed by the clay and fails to cure. When used as top dressing, superphosphate soaking liquid (5% to 10% concentration) may be used or concentrated in the root-dense soil layer in the early stage of the crop.
Viral Transportation Medium Tube
Uses: used for the detection and sampling of influenza, hand, mouth, foot and other epidemic diseases
Inspection principle:
The combination of multiple antibiotics has broad-spectrum antibacterial and antifungal effects;
As a protein stabilizer, bovine serum albumin can increase the survival time and infection stability of the virus;
Buffers such as Hank's build a neutral environment, which helps to increase the survival time and infection stability of the virus;
Phenol red is an acid-base indicator, the discoloration area is 6.6 (yellow)~8.0 (red), and it is red at 7.2~7.4.
Steps:
1. According to the sampling requirements, use a sampling swab to collect samples.
2. Place the swab after collecting the sample into a sterile sampling tube.
3. Break the sampling swab rod that is higher than the sterile sampling tube.
4. Tighten the cap of the sterile sampling tube.
5. Label the sterile sampling tube with information as required.
For sample collection, transportation and storage.
Product advantages:
1. The virus discretion of the flocking swab is high to ensure the accuracy of the test results.
2. The samples are well sealed to ensure product transportation and safe storage.
3. Product instruction manual, product certificate
Product Details:
1. The product set includes a one-time Virus Sampling Tube (including preservation solution), a self-sealing bag, a sampling swab, and instructions.
2. Product specification: 100 sets/box, 8 boxes/box 3. Product weight: 0. 65kg/box, 13. 2kg/box
4. Packing size: 25. 5*23. 5*14. 5 boxes, 53*49*32/carton
Scope of application:
Work resumption testing, the best choice for large-scale population screening
Features:
1. Transport at room temperature, stably preserve viral RNA
2. Pre-packaged guanidine salt lysate can inactivate the new coronavirus, ensuring the safety of transportation and testing personnel 3. The large-capacity preservation solution can fully soak the swab head,
The sample size can be divided into three parts for testing and reserve samples respectively to meet the testing needs.
Scope of application:
Suspected cases, disease control testing, preferred by P3 laboratory
Viral Transportation Medium Tube,Sample Collection Tubes,Transport Nasal Swab With Tube,Virus Sampling Tube Nasopharyngeal Swab
Jilin Sinoscience Technology Co. LTD , https://www.jlgkscience.com