General knowledge of the use of pesticides Basic knowledge of pesticides Pesticide refers to chemicals used to prevent, eliminate or control diseases, insects, grasses and other harmful organisms that endanger agriculture and forestry, as well as chemicals that purposely regulate the growth of plants and insects or from organisms. , a substance of other natural substances or a mixture of several substances and preparations thereof.
Classification of pesticides:
According to the use of pesticides: it is called insecticide for controlling pests; it is called acaricide for controlling mites (red spider, whitefly, etc.): it is called insecticide for controlling nematodes; it is called for controlling weeds. Herbicide is a plant regulator that regulates plant growth.
Formulations of pesticides 1. Powders: Powders prepared by crushing or adsorbing the original drugs and fillers. They are insoluble in water and are not easily wetted. They cannot be sprayed with water. Powder is usually sprayed directly onto the crop with a duster, or it can be hand-sprayed. It is also suitable for seed dressing, soil treatment, bait making, and granules. When using powder, spray powder after morning, evening or dew, and when the leaves are wet after rain.
2. Wettable powder: In addition to the original powder and filler, it also contains appropriate amount of humectant. Add water to form a suspension for spraying. It can also be mixed with seeds and toxic soil, but it can not be sprayed.
3, granules: adhere to or contain a certain amount of the agent on the solid particles, easy to use, good directionality, no drift, safe application, long residual time. Emulsifiable oil: A transparent oil made from the original drug, solvent and emulsifier. When added with water, it becomes an opaque emulsion for spraying.
4, water agent: the original drug is water-soluble, small hydrolyzability, it can be made into a water agent, diluted with water is a dilute aqueous solution for spray use.
5. Suspending agent: a viscous suspension preparation composed of solid drug particles, water, wetting agent, tackifier, etc., can be used by adding water.
6. Fumigant: The toxic gas or solid agent volatilized by the boiling point liquid agent reacts with water and other substances in the environment to produce toxic gas, and fumigates the insecticide in a closed place.
The mode of action of pesticides 1. Insecticides: There are usually four ways of contact, stomach poisoning, fumigation and systemic absorption.
Fungicide: After application to plants, the coverage of the pesticide can protect plants from infection by pathogens or pathogens.
Herbicide: A contact-killing herbicide that kills weeds by contact. This agent generally kills only the upper part of the weeds and has little effect on the underground part.
Note that the identification of pesticides in counterfeit pesticides and pesticides does not match the pesticides in the actual packaging. Inferior pesticides refer to the main indicators of pesticides in the packaging that do not meet the quality standards. China has implemented a pesticide registration system, and pesticides approved for registration can be produced. Sales use, purchase pesticides to buy pesticides with registration number on the label.
Prohibited pesticides According to national regulations, pesticides that have not been approved for registration shall not be produced, sold or used in China. There are two cases of prohibited pesticides. One is because no manufacturer has produced it, so no one has applied for registration. The other is due to safety issues during testing or use.
Pesticides that are strictly prohibited are:
Methamidophos, phorate (3911), acesulfame, methylthiophosphorus, methyl parathion (methyl 1605), parathion, methyl isoflavin, monocrotophos, phosphorus amine, Insecticide phosphorus, omethoate, quick-killing, aldicarb, carbofuran, dicofol, methomyl, mercury compounds, dieldrin, endrin, hexachlorocyclohexane, DDT, chlordane, heptachlor, six Chlorophenyl, tricyclotin, Puttan, dibromoethane, fluoroacetamide, dipamine, sodium fluoroacetate, tribromochloropropane 2, 4, 5, 内, internal phosphorus, cyanide compounds, enemy Double, insecticidal cockroach, tetramine, rat gamma, herbicide ether, aldrin, chlorine preparation, arsenic, lead, glucosamine, tetramine silicon, fluoroacetamide.
Pesticides that can be used:
Bactericidal, stone sulphur, Dasheng, mancozeb, Qimansu, phoxim, chlorpyrifos, rotidine, 843 rehabilitating agent, imidacloprid, acetamiprid, avermectin, worm, Green vegetable treasure, chlorothalonil, agricultural anti-wuyincin, puppak, methyl thiophanate, keklu, pulic, agricultural streptomycin, can be killed, Bacillus thuringiensis, carbendazim, metalaxyl, Aifuding, chlortetracycline, carbendazim, special love (Fu..), Anke Mn, Zlu, Suikeling, chlorothalonil dust, DT WP, chlorpyrifos, trichlorfon, Pyrethroids, butyl thiocarbamate, BT, butene fipronil, matrine, bromopermethrin, ruthenium.
Common symbols when using pesticides are:
Common symbols are AI (active ingredient), TC (original drug), EC (emulsification), SC (suspension), CS (microcapsule suspension), SL (aqueous solvent), SP (wettable powder), SG ( Wettable granules), TB (tablets), WP (wettable powder), BR (pills), WG (water dispersible granules), OL (oil agents), OP (powder), G (granules), ED (electrostatic spray), UL (ultra-low liquid), SU (lower suspension), DS (seed dressing), FS (suspension for seed dressing), PS (seed of pesticide coated), AE (aerosol), CR (pore mother powder or mother liquor), FU (smoke agent), RP (poison bait), AB (poisonous valley), GB (granular bait), C/S (box), PKT (bag, Package), WT (weight), MP (melting point), bp (boiling point), ULV (ultra-low volume spray), JH (insect juvenile hormone), PPm (concentration of one part per million), PPb (billions of points) One of the concentrations), PPt (one trillionth of a concentration), PH (the pH of the solution).
According to raw materials can be divided into four categories:
(1) Inorganic pesticides: Most of these pesticides are made from mineral raw materials, with few varieties and low efficacy.
(2) Plant-based pesticides: These pesticides are processed by natural plants and contain the active ingredients such as pyrethrum.
(3) Microbial pesticides: These pesticides are manufactured using microorganisms and their metabolites. Such as Bacillus thuringiensis, Nongkang 120 and so on.
(4) Organic synthetic pesticides: artificially synthesized organic compound pesticides. These pesticides are characterized by high efficacy, quick effect, low dosage and wide application (Ledong).

Portable Toilet

What are the precautions for portable toilet construction?
Now many tourist attractions and resident activity areas need to install mobile toilets. This kind of public beta construction cost is low, and it is easy to use. It can also increase or decrease the number of toilets at any time according to the area of the site. The daily application is also guaranteed. Portable toilet is also a kind of prefab houses, which can be customized in size, but what should be paid attention to when building this type of toilet?

Privacy guaranteed
After all, the toilet is still a relatively private space. Although it is a public beta, we must also pay attention to privacy protection. At least the toilet door should be opaque, and there is a door lock inside, which can be opened and closed at any time, which can also ensure safety. The portable toilet produced by our company adopts steel structure frame and Eps Sandwich Panel, with guaranteed strength and safety.

Complete functional area
Mobile toilets also have certain functional areas. Even some small toilets should at least have toilets, sinks, showers, etc. The design of the public area must be determined. If it is a single room design, then at least there must be a sink, and if it is a large toilet, then there must be divisions of different functional areas.

Guaranteed stability
Because this type of toilet generally needs to be made using Container House, color steel, etc., we still need to pay special attention to its stability. Most toilets have certain wheels, so it is also very convenient to move and disassemble at any time. But relatively speaking, its stability is poor, so we cannot ignore the stability of the mobile toilet.

Guaranteed to be environmentally friendly
The public test still needs to have an environmental protection effect. The steel plate can be used repeatedly, but it must also have a certain thickness and corrosion resistance. Only in this way can the reliability of the long-term use of the toilet be guaranteed, so when the toilet is constructed, it is necessary to start with the selection of materials for comparison, so that the long-term use of the toilet is truly guaranteed.
When building a mobile toilet, the basic design and construction must be done well, and attention must be paid to the specific quality of the steel plate, whether it is suitable for long-term use, etc., and the price must also be measured.

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Henan Jinming Metal Material Co., Ltd. , https://www.hnjmmetal.com