123312-89-0
基本信息
吡嗪酮
吡蚜酮
拒嗪酮
拒嗪酮/吡蚜酮
(e)-4,5-fihydro-6-methyl-4-((3-pyridinylmethylene)amino)-1,2,4-triazin-3(2h)-one
PLENUM
PYMETROZIN
PYMETROZINE
PYMETROZIN PESTANAL, 250 MG
1,2,4-Triazin-3(2H)-one, 4,5-dihydro-6-methyl-4-(E)-(3-pyridinylmethylene)amino-
pymetrozine (bsi, pa e-iso)
PYMETHROZINE
(E)-4,5-Dihydro-6-methyl-4(3-pyridylmethyleneamino)-1,2,4-triazin-3(2H)-one
pymetrozine (ISO) (E)-4,5-dihydro-6-methyl-4-(3-pyridylmethyleneamino)-1,2,4-triazin-3(2H)-one
6-Methyl-4-(pyridin-3-ylmethylideneamino)-2,5-dihydro-1,2,4-triazin-3-one
物理化學(xué)性質(zhì)
安全數(shù)據(jù)
常見問題列表
吡蚜酮pymetrozine是瑞士原諾華公司1988年開發(fā)的,屬于吡啶類或三嗪酮類殺蟲劑。吡蚜酮可以用于蔬菜、小麥、水稻、棉花、果樹等多種作物,幾乎對所有類型的刺吸口器害蟲,如甘藍(lán)蚜、棉蚜、麥蚜、桃蚜、小綠斑葉蟬、褐飛虱、灰飛虱、白背飛虱、甘薯粉虱及溫室粉虱等都有防控作用。
Homoptera
吡蚜酮屬于吡啶類或三嗪酮類殺蟲劑,是全新的非殺生性殺蟲劑,最早由瑞士汽巴嘉基公司于1988年開發(fā),該產(chǎn)品對多種作物的刺吸式口器害蟲表現(xiàn)出優(yōu)異的防治效果。利用電穿透圖(EPG)技術(shù)進(jìn)行研究表明,無論是點滴、飼喂或注射試驗,蚜蟲或飛虱一接觸到吡蚜酮幾乎立即產(chǎn)生口針阻塞效應(yīng),立刻停止取食,并最終饑餓致死,而且此過程是不可逆轉(zhuǎn)的。因此,吡蚜酮具有優(yōu)異的阻斷昆蟲傳毒功能。盡管目前對吡蚜酮所引起的口針阻塞機(jī)制尚不清楚,但已有的研究表明這種不可逆的“停食”不是由于“拒食作用”所引起的。經(jīng)吡蚜酮處理后的昆蟲最初死亡率是很低的,昆蟲“饑蛾”致死前仍可存活數(shù)日,且死亡率高低與氣候條件有關(guān)。試驗表明,藥劑處理3h內(nèi),蚜蟲的取食活動降低90%左右,處理后48h,死亡率可接近100%。
吡蚜酮對蜜蜂、魚類等水生生物、家蠶有毒,施藥期間應(yīng)避免對周圍蜂群的影響,蜜源作物花期、蠶室和桑園附近禁用。養(yǎng)育稻田禁用,遠(yuǎn)離水產(chǎn)養(yǎng)殖區(qū)施藥,禁止在河塘等水體中清洗施藥器具。
Pymetrozine, a fast-acting and selective inhibitor of aphid feeding. In-situ studies with electronic monitoring of feeding behaviour. Pymetrozine, a pyridine azomethine compound, represents a novel insecticide with a selective activity against homopteran insects. It acts in a unique way: aphids are not knocked down on contact but seem to die of starvation. This implies an effect of Pymetrozine on feeding behaviour. The aim of the present work is to elucidate how and at which step Pymetrozine interferes with the complex mechanisms underlying phloem feeding. The effect of Pymetrozine, applied in various ways, on different phases of stylet penetration and feeding activity of individual aphids is studied using the Electrical Penetration Graph technique (EPG). Initial choice experiments indicated that Pymetrozine does not have a deterrent or antifeedant action. Topical application (150 ng/mg fresh weight) inhibits stylet insertion into the plant. When injected, less than 30 ng/mg is sufficient to produce the same effect. When Pymetrozine is systemically applied via plant spraying or root uptake, aphids started feeding normally. After some time, however, they withdrew their stylets from the phloem and walked around with unaffected locomotion. At low doses aphids eventually recovered and resumed feeding. High doses, however, irreversibly disrupted feeding and prevented stylet reinsertion. Aphid motility is not affected up to an estimated haemolymph concentration of 1 mM Pymetrozine. Aphids which eventually stopped feeding on Pymetrozine-treated plants showed EPGs with distorted salivation/ingestion patterns.
吡蚜酮低毒,對天敵影響小,僅作用于刺吸口器害蟲。該化合物對皮膚和眼睛均無刺激,且無致突變性。對哺乳動物毒性很低,對于鳥類、魚類、蜜蜂等也有很好的安全性。