How are pesticides classified?

There are many varieties of pesticides. For the convenience of research and use, pesticides are often classified from different angles. The main classification methods are as follows: ① According to the classification of prevention and control objects, they can be divided into pesticides , acaricides, molluscicides, nematicides, fungicides, herbicides, plant growth regulators, rodenticides, etc. ② According to source classification, it can be divided into mineral pesticides (inorganic pesticides), chemical pesticides (organic synthetic pesticides), biological pesticides, botanical pesticides, biochemical pesticides, genetically modified organisms, natural enemy organisms, etc. ③According to the toxicity classification of pesticide raw materials, it can be divided into highly (highly) toxic pesticides, toxic pesticides, low-toxic pesticides, etc. ④ According to the classification of chemical structure, it can be divided into inorganic chemical pesticides and organic chemical pesticides from a broad perspective. At present, there are few types of inorganic chemical pesticides, while there are many types of organic chemical pesticides. Can be roughly divided into: organochlorines, organophosphorus, pyrethroids, carbamates, substituted benzene, organosulfur, halogenated hydrocarbons, phenols, carboxylic acids and their derivatives, substituted alcohols , quaternary ammonium salts, ethers, phenoxycarboxylic acids, amides, ureas, sulfonylureas, triazobenzenes, amidines, organic metals and various heterocyclics, etc.