Melamine chemical structure: organophosphates, organochlorines, pyrethroids. Classification of uses: can be divided into insecticides, fungicides, acaricides, rodenticides, herbicides, specific agents and plant growth regulators. Source classification: The products of synthetic ammonia manufacturers can be classified into mineral pesticides, botanical pesticides, organic pesticides, and microbial pesticides. Insecticides usually have four modes of action to kill pests: contact, stomach poison, fumigation and systemic. The classification of dosage forms can be divided into old dosage emulsifiable concentrates, suspension concentrates, water emulsions, both concentrated emulsions and microemulsions, wettable powders, water-based dosage forms and water dispersible granules, etc.

1. Synthetic ammonia insecticide

A Organic phosphorus phosphate, monothiophosphate, dithiophosphate, phosphonate, phosphoramide, thiophosphoramide, pyrophosphate

B Carbamates N-methyl carbamates, dimethyl carbamates

C Organic nitrogen, amidine, sandworm poison, urea

D Pyrethroids Light unstable pyrethroids, light stable pyrethroids

E Organochlorine

F Organic fluorine

G Inorganic insecticide is an inorganic compound made from natural minerals

H Plant insecticide

I Microbial insecticide

J insect growth regulator

K insect behavior modifier

2. Fungicide

A Organic phosphorus dithiocarbamates, sulfamic acid, thiosulfonate, trichloromethylthio

B Organophosphate

C Organic Arsenic

D Organic tin

E Organic sulfur

F Benzene

G Heterocyclic type Benzimidazole type,! Thioins, pyrimidines, triazoles, morpholines, phenazines, pyrazoles, piperazines, quinolines, benzothiazoles, furans

H Inorganic fungicide

I Microbial fungicide

3. Herbicide

A amide

B Dinitroaniline

C Carbamate

D Urea

E Phenolic

F Diphenyl ethers

G triazines

H Phenoxycarboxylic acids

I Organophosphorus

J Heterocyclic

K Sulfonylureas

L imidazolinones

M selective herbicide

N-killing herbicide

4. Rodenticide

A Organic phosphate

B Heterocyclic

C Urea, thiourea

D Organic fluorine

E Inorganic toxic compounds

F acute rodenticide

G anticoagulant rodenticide