Sowing at the right time. Choose sand loam with a pH value of 5.5-7.2, deep soil layer, plough layer and good drainage. When the soil temperature of 5 cm is stable above 15 °C, it can be sown from early March to early May. Seed treatment. Seed dressing with new high-fat film before sowing. It can keep warm, moisturize and swell, improve the germination rate of seeds and make the seedlings strong. Repel underground pests and isolate viral infections. Can prevent stem rot. Striping or hole seeding can be used for planting. The density of seeding in spring is generally greater than that in summer. Rational fertilization. Bio-fermentation compost, urea, phosphate fertilizer, potassium sulfate, boron fertilizer and zinc fertilizer. Spraying the flower wangwang No. 3 at the 3-4 leaf stage, spraying once every 7 days, even spraying 3 times. Spraying with special nutrition in the early stage of flowering, spraying once every 10 days, even spraying 3 times. During the full bloom period, the base of the plant is covered with soil, so that the roots are not unearthed, and the nutrient solution is sprayed after 7 days. weeding. Spray the ground with a herbicide before sowing. Spray the ground in the 2-3 leaf stage and perform manual weeding if necessary. Field management. Peanut flowering requires more water in the lower needle stage and the pod-forming stage, and is timely watered in case of drought. Pay attention to drainage during the rainy season, especially during the pod-forming period to prevent waterlogging. Pest Control. In the seedling stage, a new high-fat film spray can be used to control the blight. For aphids that transmit viruses, pesticides should be used for timely prevention and control. For brown spot, black spot, anthracnose, etc., in the early stage of the disease, the targeted agent + new high-fat film spray is sprayed once every 7-10 days, and sprayed 3 times. In the growing season, when the leaves turn yellow, it is necessary to check the roots in time. It is found that the root rot uses roots and roots to protect the plant roots from virus-transmitted infections and leaves and fruits, ensuring the healthy operation of the plant transport system and enhancing the positive energy of plant development. . Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Magnetic Bead Nucleic Acid Extraction Reagent
The magnetic bead method nucleic acid extraction kit is a high-tech product that combines biological science and nanomaterial science. It is a major breakthrough in my country's nucleic acid extraction and purification technology. .
Magnetic bead method for nucleic acid extraction has incomparable advantages over traditional DNA extraction methods, which are mainly reflected in: 1. It can realize automatic and large-scale operation. At present, there are 96-well nucleic acid automatic extraction instruments, and the extraction time of one sample can be realized. The processing of 96 samples complies with the high-throughput operation requirements of biology, enabling rapid and timely response to infectious disease outbreaks, which makes traditional methods unmatched; â‘¡ The operation is simple and time-consuming, and the entire extraction process has only four steps , most of them can be completed within 36-40 minutes; â‘¢ Safe and non-toxic, no toxic reagents such as benzene and chloroform in traditional methods are used, and the damage to experimental operators is minimized, which fully conforms to modern environmental protection concepts; â‘£ Magnetic beads and nucleic acids The specific binding of the extracted nucleic acid results in high purity and high concentration of the extracted nucleic acid.
According to the same principle as the silica membrane spin column, the superparamagnetic silica nano-magnetic beads are prepared after the surface of the superparamagnetic nanoparticles is modified and modified by nanotechnology. The magnetic beads can specifically recognize and efficiently bind to nucleic acid molecules on a microscopic interface. Using the superparamagnetic properties of silica-coated nanomagnetic microspheres, under the action of Chaotropic salts (guanidine hydrochloride, guanidine isothiocyanate, etc.) and an external magnetic field, samples from blood, animal tissues, food, pathogenic microorganisms, etc. The isolated DNA and RNA can be used in clinical disease diagnosis, blood transfusion safety, forensic identification, environmental microbial testing, food safety testing, molecular biology research and other fields.
Magnetic bead nucleic acid extraction can generally be divided into four steps: lysis-binding-washing-elution.
Genetic testing will surely become a new symbol of the development of the biological industry. The emergence of high-throughput, automated nucleic acid extraction methods will reduce the labor cost of genetic testing, make large-scale testing a reality, and make it possible for genetic testing to reach ordinary people.
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