The following is a detailed classification of the main types of insecticides and their characteristics:
1. Organophosphorus insecticides
Features: High efficiency and broad spectrum, mainly inhibiting the activity of acetylcholinesterase in insects, leading to the accumulation of neurotransmitters, causing the pests to be overexcited and die.
Representative agents: Dichlorvos, chlorpyrifos, and phoxim.
Applications: Widely used in agriculture, forestry, and health fields to control a variety of pests.
2. Carbamate insecticides
Features: Rapid insecticide and high selectivity, also work by inhibiting acetylcholinesterase, but less toxic to humans and animals.
Representative agents: Carbofuran, isoprocarb, and methomyl.
Applications: Mainly used for crop pest control.
3. Pyrethroid insecticides
Features: High efficiency, low toxicity, low residue, strong contact and stomach poisoning effects, and some varieties have both repellent and fumigation functions.
Representative agents: cypermethrin, cypermethrin, and high-efficiency cyhalothrin.
Application: Widely used in agriculture and health fields.
4. Chlorinated nicotinoid insecticides
Features: Strong systemicity, acting on the nicotinic acetylcholine receptors of the insect nervous system, high efficiency and low toxicity.
Representative agents: Imidacloprid, acetamiprid, and thiamethoxam.
Application: Specialized in treating piercing-sucking mouthparts pests.
5. Benzoylurea insecticides
Features: By inhibiting insect chitin synthesis, interfering with molting and metamorphosis, it has both stomach poison and contact killing effects.
Representative agents: Diflubenzuron, hexaflumuron, and diflubenzuron.
Application: Especially suitable for the control of lepidopteran pests.
