Detailed classification of pesticides

First of all, according to the purpose

Insecticide, acaricide, rodenticide, nematicide, molluscicide, bactericide, herbicide, plant growth regulator, etc. According to the source of raw materials, it can be divided into mineral pesticides (inorganic pesticides) and biological pesticides (natural organic substances, microorganisms, antibiotics, etc. ) and chemically synthesized pesticides.

Second, according to the chemical structure

Organic chlorine, organophosphorus, organic nitrogen, organic sulfur, carbamate, pyrethroid, amide compound, urea compound, ether compound, phenolic compound, phenoxycarboxylic acid, amidine, triazole, heterocyclic compound, benzoic acid, organometallic compound, etc. , are all organic synthetic pesticides.

Thirdly, according to the processed dosage form

Powder, wettable powder, emulsion, emulsifiable concentrate, cream, paste, colloid, fumigant, fumigant, aerosol, granule, microparticle and oil agent, etc.

Extended data

How to use different kinds of pesticides

1, powder. Powder is insoluble in water, so it cannot be sprayed with water. Low concentration powder is used for spraying, and high concentration powder is used for preparing toxic soil, bait, seed dressing and soil treatment. Powder is easy to use and has high working efficiency, so it should be used in the morning and evening when there is no wind or the wind is weak.

2. Wettable powder. Strong hygroscopicity, can be dispersed or suspended in water after adding water. Can be use for spraying, poison bait and soil treatment.

3. Soluble powder (water solvent). Water can be sprayed or poured directly.

4. Emulsion (also known as emulsifiable concentrate). Emulsion is an emulsion added with water, which can be used for spraying, root irrigation, seed dressing, seed soaking, toxic soil, stem coating and so on.

5. Ultra-low volume preparation (oil). It is a drug directly used for spraying and a special supporting pesticide for ultra-low volume spraying. You can't add water when you use it

6. Granules and granules. It is a granular pesticide preparation made of pesticide raw materials and fillers, which is not easy to cause phytotoxicity. Mainly used for leaf filling, spreading, spot application, seed dressing, furrow application, etc.

7. Sustained release agent. When in use, the pesticide is slowly released, which can effectively extend the validity period. Therefore, the residual period is prolonged and the pollution and toxicity are reduced. The usage is generally the same as that of granules.

8. Aerosol. Smoke agent is fine powder or ingot made of pesticide, fuel, oxidant, combustion improver, etc. This pesticide is vaporized by heating, and then condenses into solid particles in the air, forming a smog shape, which is mainly used to control pests in forests, protected agriculture and warehouses.

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