Le lufénuronest un insecticide de benzoylurea;chlorfénapyrest un insecticide pyrrole et un acaricide;indoxacarbeest un insecticide de l'oxadiazine. Les trois ont leurs propres effets insecticides. Cet article analyse et compare brièvement les trois ingrédients des aspects suivants pour fournir quelques références à la sélection des produits.
1. Méthode d'insecticide
Lufenuron a des effets de poison à l'estomac et de tuer des contacts, aucune absorption systémique et une forte élimination des œufs; Le chlorfénapyr a des effets de poison à l'estomac et de meurtre de contact, a un certain effet systémique et ne tue pas les œufs; L'indoxacarbe a des effets de poison à l'estomac et de tuer des contacts, n'a aucun effet systémique et ne tue pas les œufs; Tous les trois sont principalement du poison à l'estomac et des meurtres de contact, et l'ajout de pénétrants ou d'extensibles lors de l'application du pesticide améliorera considérablement l'effet de mise à mort.
2. Spectre d'insecticide
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>indoxacarbe
3. Vitesse de la mort des insectes
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. Durée d'effet
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. Taux de rétention des feuilles
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. Sécurité
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. Coût du médicament
The comparison of drug cost is: indoxacarb>chlorfenapyr>Lufenuron. Pour évaluer la sensation globale des trois dans une utilisation réelle en une phrase: Lufenuron se sent très efficace lorsqu'il est utilisé pour la première fois, mais se sent très efficace après l'avoir utilisé deux fois de suite; Le chlorfenapyr, au contraire, se sent très efficace lorsqu'il est utilisé pour la première fois, mais se sent très ordinaire après l'avoir utilisé deux fois de suite; L'effet de l'indoxacarbe est à peu près entre les deux.
