Foliar fertilization of crops is also called extra-root fertilization (follow-up) fertilizer, that is, supplementing the nutrients required by plants through foliar spraying, which plays a role in regulating plant growth, supplementing the missing elements, preventing premature aging and increasing yield. Especially under adverse conditions, the root absorption function is hindered, and foliar fertilization often exerts a special effect, which can supply nutrients directly and quickly, avoid nutrients being adsorbed and fixed by the soil, and improve fertilizer utilization. Disclaimer: Some articles of this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for processing. 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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Inorganic nutrient foliar fertilizers. These foliar fertilizers have high levels of nutrients such as nitrogen, phosphorus, potassium and trace elements. Their main function is to provide various nutrients for the crops and improve the nutritional status of the crops, especially suitable for later crop growth. Various nutritional supplements. Its characteristics are: fast absorption speed, but more residues in the plant.
Regulated foliar fertilizer This type of foliar fertilizer contains substances that regulate the growth of plants, such as auxin, hormones and other components. Its main function is to regulate the growth and development of crops. It is suitable for early and middle plant growth. Its characteristics are: fast absorption speed and less residual harmful substances.
Biological foliar fertilizer This type of foliar fertilizer uses the organic substances extracted from soybean meal and farm fertilizer as a carrier to add active microorganisms. Such fertilizers contain microorganisms and metabolites, such as amino acids, nucleotides, and nucleic acids. The main function is to stimulate crop growth, etc., promote crop metabolism, reduce and prevent the occurrence of pests and diseases. Its characteristics are: obvious fertilizer effect, basically no residue, mostly green fertilizer, but slow absorption rate, harsh spraying conditions and poor stability.
Compound foliar fertilizers There are many kinds of foliar fertilizers, and the compounding forms are various. It has many functions, which can provide nutrition and stimulate growth and development.
Humic acid foliar fertilizer This kind of foliar fertilizer has a long effective period, increases the ground temperature of the protected ground, and effectively reduces the occurrence of common physiological and pathological diseases of low temperature and high humidity. Humic acid can be divided into yellow humic acid, brown humic acid and black humic acid according to its dissolution and color in water. Black humic acid is basically insoluble in water, brown humic acid is slightly soluble in water, yellow humic acid has a small molecular weight, is easily soluble in water, and can chelate mineral elements. Its characteristics are: fast effect, green, and pollution-free.
The amino acid foliar fertilizer is mainly based on amino acids and complexes with micro-fertilizers, containing plant nutrient growth regulators and essential trace elements of plants. Amino acid foliar fertilizer can promote root growth, strengthen seedlings, strengthen plants, enhance leaf photosynthetic functions and crops' resistance to stress, diseases and insect pests, and have a significant yield increase effect on a variety of crops. Its characteristics are: amino acid fertilizers are non-toxic, pollution-free, and do not pollute the environment.