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吡虫啉是新研制的一种吡啶类杀虫剂,具有广谱杀虫活性。对蚜虫、白粉虱、叶蝉、蓟马等刺吸式害虫有特效,对其他种类的害虫也有较好的防治效果。一、作用机理吡虫啉作用于烟碱、乙酰胆碱受体,干扰昆虫神经系统的刺激传导,引起神经通路的阻塞,造成重要的神经传导物质乙酰胆碱的积累,从而导致昆虫的麻痹,并最终死亡。二、作用特点 (一)高效单位面积用药量较低,一般为每亩几克,远低于现行的常规杀虫剂。 (二)持效期长可长达数周。施药一次,可使一些作物整个生长季节免受害虫的侵害。 (三)具有内吸、胃毒和触杀作用可作为土壤和种子处理剂使用,无论害虫取食或接触都有防治效果。
Imidacloprid is a newly developed pyridine insecticide with broad spectrum insecticidal activity. For aphids, whitefly, leafhoppers, thrips and other sucking pests have special effects on other types of pests also have good control effect. I. Mechanism of action Imidacloprid acts on nicotine and acetylcholine receptors and interferes with the nerve conduction and conduction in insects, causing blockage of nerve pathways, resulting in the accumulation of acetylcholine, an important neurotransmitter, resulting in the paralysis of insects and eventually death. Second, the role of Features (A) high unit dose of low efficiency, usually a few grams per mu, much lower than the current conventional pesticides. (B) The retention period can be as long as a few weeks. Once applied, some crops can be protected from pests throughout the growing season. (C) with suction, stomach poisoning and contact action can be used as soil and seed treatment agent, whether pests eat or have control have the effect.