Biological pesticides refer to the use of biological organisms (fungi, bacteria, insect viruses, genetically modified organisms, natural enemies, etc.) or their metabolites (pheromone, auxin, sodium naphthalene acetate, 2,4-D, etc.) to kill agricultural pests. Or inhibited preparation. Also known as natural pesticides , it refers to non-chemical synthesis, from natural chemicals or living organisms, and has the role of bactericidal pesticides and insecticides. Biological pesticides include microorganisms such as entomopathogenic nematodes, bacteria and viruses, plant derivatives and insect pheromones. Biopesticides play an important role in the Integrated Pest Management System (IPM) used in organic agriculture. Third, the correct application of biological pesticides.
Brass fasteners are used for their physical and aesthetic properties. Brass is utilized due to its high thermal conductivity and corrosion resistant properties, it is suitable for use in hot and cold environments, and resistant to water corrosion, making it a staple of industries such as heating and plumbing. Brass fasteners are largely non-magnetic (like any fastener, slight magnetic properties can develop during the manufacturing process) and resistant to tarnishing.
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First, we must see the advanced nature of biological pesticides.
There are many contents of biological pesticides, including microbial pesticides, biochemical pesticides, genetically modified organism pesticides, natural enemy biological pesticides, and plant-derived pesticides. The application of biological pesticides can kill a variety of pests and diseases, and can produce pollution-free green foods. Third, it can reduce environmental pollution, ensure the safety of humans and animals, and protect natural enemies. Fifth, pests and diseases are not easy to produce resistance. However, bio-pesticide is only one of the pesticide components, and it is not yet a substitute for chemical pesticides.
Second, we must understand the mechanism of action of biological pesticides.
Biological pesticides have a gradual process of poisoning pests and diseases. Such as high-efficiency Bt, first numb the pest nerve, and then destroy its internal organs to death, it takes 1 to 3 days. Another example is an insect virus, in which the nucleic acid of the virion enters the pest and absorbs the nutrients in the worm, causing the cell tissue to disintegrate and die, which takes 3 to 5 days. Although the visual effect of biological pesticides is slower than that of chemical pesticides, the harmful functions of pests and diseases have been suppressed after application, or they exist in name only. Therefore, it must be rationally applied according to the characteristics of these pesticides.
1. It is necessary to strictly apply the biological pesticides several days in advance according to the forecast of pests and diseases in the local plant protection department;
2. It is necessary to strictly follow the application dosage, and it is not allowed to increase or decrease the application concentration; thirdly, in order to improve the control effect and safety performance, it can be mixed with some low-toxic chemical pesticides to minimize the pollution of highly toxic pesticides. However, high-efficiency Bt is forbidden to be mixed with fungicides and acidic compounding liquids, and can not be applied in mulberry gardens; fourth, it is not possible to expose biological pesticides to sun exposure or damp; fifth is to choose to use drugs on sunny days or cloudy days, and to re-spray after rain. 1 time.
Brass fasteners are suited for some marine environments, including brackish water and slow current sea water; brass in this environment develops a protective green coating. Brass fasteners are also commonly used with wood applications, as the golden coloring blends well with the tan wood. Brass is a softer metal and must be used with care, always drilling pilot holes and using driver bits that fit the head of the screw precisely to prevent stripping. Brass Bolts also require a pilot hole be driven before installtion.