Lemandou-Jack: 06-04 11:14:32 Pesticide classification: insecticides, fungicides, herbicides 1. Insecticides: natural enemies of pests Mode of action: Contact killing type (such as high-efficiency cyhalothrin): direct contact with the insect body can cause death, and uniform spraying is required. Gastric toxin type (such as cockroach bait): Poisoned by pests after feeding, suitable for cockroaches, ground tigers, etc. Internal absorption type (such as Leguo): After being absorbed by plants, pests feed on the plants and die, but it is prohibited indoors! Fumigation type (such as aluminum phosphide): Gas poisoning, requires use in a closed space, and has extremely high toxicity. 2. Fungicide: the “nemesis” of bacteria Mechanism of action: Protective type (such as mancozeb): Spray in advance to form a protective film to prevent bacterial invasion. Therapeutic type (such as pyrazole ether fungicide): Penetrating the plant body to kill infected bacteria. Eradicating type (such as toxic fluorophosphate): activates plant immunity and indirectly resists pathogens. 3. herbicide: the “terminator” of weeds Mode of action: Selective herbicides (such as glyphosate): only kill weeds and do not harm crops. Disinfectant herbicides (such as paraquat): kill when green, and need directional spray.
Post time: Jun-04-2026