铁灭克也称涕灭威,是一种氨基甲酸酯类杀虫、杀螨、杀线虫剂。原药为具有硫磺气味的白色结晶,毒性很高,大鼠急性口服LD50为0.9毫克/公斤,经皮LD50为5毫克/公斤,比1059大30余倍,比3911大4倍。为便于使用,加工成毒性较低的颗粒剂,其口服毒性只相当于原药的0.22,经皮毒性只相当于原药的0.002—0.0058。 铁灭克用作土壤处理后,由于内吸作用,有效成分从植物根部吸收,传导转移到植物体各个部位,发挥杀虫作用。害虫取食有毒植物后,抑制胆碱酯酶的反应,使害虫死亡。其杀虫效果与使用方法、用量、作物种类、土壤含水量有关,在作物根部土壤水 Iron off grams also known as aldicarb aldicarb, is a carbamate insecticide, acaricide, nematicide. The original drug is a white crystalline sulfur smell, high toxicity, rat acute oral LD50 0.9 mg / kg, transdermal LD50 of 5 mg / kg, more than 30 times larger than 1059, 4 times larger than 3911. For ease of use, processed into less toxic granules, its oral toxicity is only equivalent to 0.22 of the original drug, transdermal toxicity equivalent to only 0.002-0.0058 of the original drug. Iron off grams for soil treatment, due to internal absorption, the active ingredient absorbed from the plant roots, conduction and transfer to all parts of the plant play a pesticidal effect. Pests eat poisonous plants, inhibition of cholinesterase reaction, the pest death. Its insecticidal effect and the use of methods, dosage, crop type, soil moisture content in the crop roots of soil water