Organic fertilizers include all substances that can be used as fertilizers in addition to chemical fertilizers. They are usually human and animal waste, crop straws, and green manures. Organic fertilizer has comprehensive nutrients and long-lasting and balanced fertilizer effects. It can not only improve soil structure, improve soil fertility, promote the release of soil nutrients, but also supply nutrients to crops, and is particularly important for the development of organic agriculture, green agriculture, and pollution-free agriculture. However, many types of organic fertilizers have different functions. The application should be scientific and blind. Organic fertilizer imbalance Organic fertilizers contain many types of nutrients, which is an advantage compared to fertilizers with single nutrient sources. However, nutrients contained in the organic fertilizers are not balanced and cannot meet the needs of high yield and quality of crops. In the application of organic fertilizers, chemical fertilizers should be formulated according to the requirements of the crops on nutrients, even if the farmland for the production of green foods should also be given appropriate amount of mineral fertilizers, and various foliar fertilizers should be applied during the growth of the crops. Low organic nutrient content Although organic fertilizer contains many kinds of nutrients, its content is low, and its decomposition in the soil is slow. Under the condition that organic fertilizer is not used in large quantities, it is difficult to meet the needs of crops for nutrient elements. Fertilizer has high nutrient content and rapid fertilizer efficiency. It can be supplemented according to the quantity of crops needed, but the fertilizer efficiency is short. In order to obtain high yields, organic fertilizers should be applied in conjunction with chemical fertilizers to make full use of their advantages to meet the needs of crops for various nutrient elements in terms of quantity and time. Organic fertilizer needs to be fermented Many organic fertilizers contain germs, eggs, and weed seeds. Some organic fertilizers contain organic compounds that are not conducive to crop growth. Therefore, all organic fertilizers should be subjected to stacking, fermentation, and processing before they can be applied to the ground. Organic fertilizers with taboos and adequately decomposed organic fertilizers should not be mixed with alkaline fertilizers to avoid the volatilization of ammonia and reduce the nutrients content of organic fertilizers. Organic fertilizer contains more organic matter and should not be mixed with nitrate nitrogen fertilizer. Viral Transportation Medium Tube
Uses: used for the detection and sampling of influenza, hand, mouth, foot and other epidemic diseases
For sample collection, transportation and storage. 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
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.
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