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拟除虫菊酯具有杀虫谱广、活性高、残效长、毒性低等优点,目前市场所供应的有溴氰菊酯、氯氰菊酯、杀灭菊酯等,适用于蔬菜、棉花等经济作物。但对螨类无控制作用,当虫、螨并发时,尚需另加杀螨剂。西德拜耳公司研制成功的百树菊酯,不仅具有上述品种的杀虫优点,而且能抑制螨类。百树菊酯通用名Cyfloxylate,商品名Baythroid。据报道,原油为部分结晶粘性油液,40℃时无挥发性,不溶于水,可溶于乙醇、丙酮、甲苯等有机溶剂,在酸性中稳定,pH
Pyrethroids has broad insecticidal spectrum, high activity, long residual effect, low toxicity, the current market supply of deltamethrin, cypermethrin, fenvalerate, etc., for vegetables, cotton and other cash crops. But no control of mites, when the worm, mites concurrent, still need to add miticide. West Bayer company developed a successful cypermethrin, not only has the insecticide advantages of the above varieties, but also inhibit mites. Permethrin Common name Cyfloxylate, trade name Baythroid. It has been reported that crude oil is a partially crystalline viscous oil which is nonvolatile at 40 ° C, insoluble in water, soluble in organic solvents such as ethanol, acetone, toluene and the like, is stable in acidity and has a pH