Lufenuronje insekticid benzoylurea;chlorfenapyrje pyrrolový insekticid a acaricid;Indoxacarbje insekticid oxadiazinu. Tito tři mají své vlastní insekticidní účinky. Tento článek stručně analyzuje a porovnává tři složky z následujících aspektů, aby poskytl některé odkazy na výběr produktu.
1. Metoda insekticidu
Lufenuron má žaludeční jed a kontaktní účinky, žádná systémová absorpce a silné zabíjení vajec; Chlorfenapyr má účinky na zabíjení žaludku a kontakt, má určitý systémový účinek a nezabíjí vejce; Indoxacarb má účinky na zabíjení žaludku a kontaktů, nemá systémový účinek a nezabíjí vejce; Všechny tři jsou hlavně jedem žaludku a zabíjení kontaktu a přidávání penetrantů nebo prodlužovačů při nanášení pesticidu výrazně zlepší účinek zabíjení.
2. insekticidní spektrum
Lufenapyr is mainly used to control leaf rollers, diamondback moths, cabbage worms, beet armyworms, armyworms, whiteflies, thrips, rust ticks and other pests, and is particularly effective in controlling rice leaf rollers; chlorfenapyr has excellent control effects on boring, sucking and chewing pests and mites, especially against resistant pests such as diamondback moths, beet armyworms, armyworms, leaf rollers, American leafminers, bean pod borers, thrips, and red spiders; indoxacarb is mainly used to control beet armyworms, diamondback moths, cabbage worms, armyworms, cotton bollworms, tobacco budworms, and leaf rollers. - So the comparison of insecticide spectrum is: chlorfenapyr>lufenapyr>Indoxacarb
3. rychlost smrti hmyzu
After the insects contact the pesticide and feed on the leaves with the pesticide, their mouths are anesthetized within 2 hours, and they stop feeding, thus stopping harming the crops, and the peak of insect death is reached in 3-5 days; 1 hour after chlorfenapyr is sprayed, the insects become less active, spots appear, the color changes, the activities stop, they become comatose, and limp, and eventually die, and the peak of insect death is reached in 24 hours; within 0-4 hours after indoxacarb, the insects stop feeding and are immediately paralyzed, and the insects' coordination ability will decrease (which may cause the larvae to fall from the crops), and they usually die within 1-3 days after the application of the pesticide. So the comparison of insecticidal speed is: chlorfenapyr>indoxacarb>Lumefantrine.
4. doba trvání účinku
Lufenuron has a strong egg-killing effect, and the insect control time is relatively long, up to 25 days; chlorfenapyr does not kill eggs, but only has outstanding control effect on old insects, and the insect control time is about 7-10 days; indoxacarb does not kill eggs, but kills all lepidopteran pests, and the control effect is about 12-15 days. So the comparison of the duration of effect is: lufenuron>indoxacarb>chlorfenapyr.
5. Míra udržení listů
The ultimate goal of insecticide is to prevent pests from harming crops. As for whether the pests die quickly or slowly or more or less, it is just a matter of perception of the people. The leaf retention rate is the ultimate indicator to measure the value of the product. Comparing the control effect of rice leaf roller, the leaf preservation rate of lufenuron can reach more than 90%, indoxacarb reaches 80%, and chlorfenapyr reaches about 65%; so the comparison of leaf preservation rate is: lufenuron>indoxacarb>chlorfenapyr.
6. Bezpečnost
So far, there has been no phytotoxicity response to lufenuron, and the agent will not cause the piercing-sucking pests to become rampant again, and it has a mild effect on the adults of beneficial insects and predatory spiders; chlorfenapyr is sensitive to cruciferous vegetables and melon crops, and is prone to phytotoxicity when used at high temperatures or high doses; indoxacarb is highly safe, with no phytotoxicity response, and vegetables or fruits can be picked and eaten the next day after application. So the comparison in terms of safety is: indoxacarb>lufenuron>chlorfenapyr.
7. Náklady na drogy
The comparison of drug cost is: indoxacarb>chlorfenapyr>Lufenuron. Pro vyhodnocení celkového pocitu tří ve skutečném použití v jedné větě: Lufenuron se cítí velmi efektivně, když se používá poprvé, ale po jeho používání dvakrát v řadě se cítí velmi efektivní; Chlorfenapyr se naopak cítí velmi efektivní, když se používá poprvé, ale po dvakrát v řadě se cítí velmi obyčejný; Účinek indoxacarbu je zhruba mezi nimi.
