Biological pesticides mainly refer to living organisms and their metabolites and transgene products that can be used to control harmful organisms such as diseases, insects, and grasses. And can be made into commercial sources of biological source agents. Including microbial pesticides, agricultural antibiotics, plant-derived pesticides, biochemical pesticides, genetically modified pesticides, and natural enemies, biological pesticides. Microbial pesticides also include microbial bactericides (eg Bacillus subtilis, Agrobacterium tumefaciens, Pseudomonas onion, Pseudomonas, Trichoderma viridans), microbial insecticides (eg, Bacillus thuringiensis, Bacillus cereus, Bacillus sphaericus). Bacillus alga, Beauveria bassiana, Metarhizium anisopliae, Paecilomyces rosacea, pilus, nuclear polyhedrosis virus, etc.), Entomopathogenic nematodes insecticides and microbial herbicides (Lubao 1). Agricultural antibiotics include antibiotics, insecticides, and herbicides. Plant-derived pesticides are mostly secondary metabolites of plant metabolism, including terpenes, alkaloids, flavonoids, steroids, phenols, unique amino acids and polysaccharides. Biochemical pesticides include pheromones, hormones, enzymes, natural plant biological regulators, and insect growth regulators. Genetically modified organism pesticides are biological pesticides produced using bioengineering techniques, including insect-resistant transgenic organism pesticides, disease-resistant transgenic organism pesticides, and herbicide-resistant biological pesticides. Natural enemies Biopesticides refer to living organisms that prevent pests other than microbial pesticides. In general, biological pesticides have the advantages of high selectivity, easy degradation, less accumulation, less dosage, less pollution, less toxicity to humans and animals, good environmental compatibility, and resistance to diseases and insect pests. At present, with the promotion of pollution-free production technology and the development and utilization of green food. The prohibition and restriction of high-toxicity, high-residue chemical pesticides are increasing. The application of pollution-free biological pesticides has become more and more widespread. Therefore, vigorously promote biological pesticides, and correctly grasp the use of biological pesticide technology, in the production practice should pay attention to the following aspects.
First, familiar with the biological characteristics of biological pesticides
The biological properties of the so-called biological pesticides refer to the scope of application of the pharmaceuticals, their action pathways, effectiveness components, and mechanisms of action. For example, S. eugenics, bacteria killing enemy, enemy treasure, etc., their active ingredients are Bacillus thuringiensis,
The scope of application is to kill Lepidoptera larvae effectively, and it is ineffective for fleas, mites and ticks, and the path of action is stomach poisoning. The mechanism of action is that the dead body can also infect other insect pests that have not been exposed to pesticides. The common characteristics of biopharmaceuticals are characterized by low toxicity, no residue, slow action, and long duration of efficacy. The matching concentration and the use dose are lower than the chemical precision. When the dose is slightly larger, it will not cause phytotoxicity to plants, and it will be safer for humans and animals, and it will not pollute the environment.
Second, science mixed biological agents
Scientific mixed biological agents can improve the control effect. When you use it, read the instructions in detail and use it with your device. Pesticides should be used up once. Such as Beauveria bassiana, with a good pesticide to be sprayed in two small days in order to avoid early spore germination, loss of effectiveness. For biological insecticides can be mixed with most chemical insecticides, because most of the chemical insecticides are chemically acidic, physiologically neutral, no killing and neutralization reactions against bacteria and fungi. Therefore can be fully mixed. It can be seen that the biopesticide can not be mixed with the chemical bactericide once it is mismatched. The active bacterial spores of biopharmaceuticals will be killed and lose their due potency; for most biological fungicides, they can be mixed with most chemical agents and biopharmaceuticals, but they cannot be mixed with basic drugs. Trichoderma agents, for example, can be mixed with most biocides and chemical pesticides at the same time.
Third, scientifically control the temperature of medication
The application temperature of biological pesticides should be controlled at about 20-30°C. The active ingredients of biological pesticides consist of protein crystals and living spores at low temperatures. Spores grow slowly in insect pests, protein crystals are difficult to work with, and the control effect is poor. According to tests, Beauveria bassiana, Bacillus thuringiensis and other biological pesticides. Spray at a temperature of 25°C to 30°C. Higher pesticidal effect than 10°C-15°C
-2 times.
Fourth, scientific control of medication time
The spores of bacteria in biological pesticides are like humid environments, so the greater the humidity in the field, the higher the efficacy. In general, spraying is best in the morning and evening, especially powder pesticides have better efficacy. Since there is dew in the morning and evening, the medicament can adhere to the stems and leaves very well, and the spores will multiply quickly. As soon as the insect pests feed on the stems and leaves, they will soon die, and the efficacy and control effect can be improved. If you spray at high temperatures at noon, direct sunlight. Ultraviolet rays in strong sunlight can kill spores. In direct sunlight for 0.5 hours, the mortality rate of spores reached 50 or so, direct l-hour exposure, and the mortality of spores reached 80%. In addition, the ultraviolet radiation will deform the spore crystals, which will greatly affect the use effect. Therefore, the application of biological pesticides should preferably be performed in the evening or on cloudy days. However, we must grasp the weather changes, in addition to choose sunny days and mornings, cloudy days or after the rain to spray fine spray, try to avoid heavy rain, heavy rain will wash away the bacteria and lose their lethality. Such as light rain after 5-6 hours after application, is conducive to spore germination, not only will not reduce the efficacy, but will increase the pest control effect.
V. Scientific use of methods
Because most of the biological pesticides have no systemic absorption and spraying, they must pay attention to uniform spraying to achieve good results. Such as Beauveria bassiana, the bacteria must be evenly sprayed on the pests, bacteria continue to multiply, gradually destroy the physiological function of pests, and ultimately make the pest metabolic disorders and death. When used on dry land crops, it is necessary to spray the liquid as much as possible so that each part of the plant is sprayed with spray and sprayed to prevent leakage, so as to achieve the purpose of prevention and control. The second is the slow effect of biological pesticides. It should be used during the young larvae of pests. Many silicon pesticides have a slow insecticide effect and are inferior to chemical pesticides immediately after spraying. Therefore, they should be used 2 to 5 days earlier than chemical pesticides. Such as BT emulsion, Beauveria bassiana, Bacillus thuringiensis, etc., they are slow to sterilize, generally after spraying, pests 3-5 days gradually died. Third, the location of storage of biological pesticides requires a cool, dry place, and avoid moisture. Such as Bacillus thuringiensis, Jinggangmycin, gibberellin and so on. Their characteristic is that they are not resistant to high temperatures and lama. It is easy to absorb moisture, lose its effectiveness, and its shelf life cannot exceed 2 years.
Oxygen Cylinder Filling System
With PSA principles, ETR Oxygen Cylinder Filling system can produce 93%±3% purity oxygen gas from compressed air directly. ETR oxygen cylinder filling system is consisted of Atlas screw air compressor, refrigerated air dryer, compressed air filter, air buffer tank, ETR Oxygen Plant, oxygen buffer tank, oxygen booster, cylinder filling station and HMI control cabinet.
Compressed air is purified through the air dryer and filters to a certain level for main plant to work with. Air buffer is incorporated for smooth supply of compressed air thus to reduce fluctuation of compressed air source. The plant produces oxygen with PSA (pressure swing adsorption) technology, which is a time proven oxygen generation method. Oxygen of desired purity at 93%±3% is delivered to oxygen buffer tank for smooth supply of product gas. Oxygen in buffer tank is maintained at 4bar pressure. With an oxygen booster, the oxygen pressure can be to 150bar and fill in cylinders.
Onsite Oxygen Cylinder Filling System
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