Micro-toxic pesticides: The median lethal dose is more than 5000 mg/kg body weight. Such as carbendazim, chlorothalonil, B-aluminum, zein-zinc, sterilization Dan, Simazine and so on. Therefore, when a large number of flower growers purchase pesticides to control flower diseases, insects, rats, and weeds, they must first understand the magnitude of the toxicity of the purchased pesticides, and use them under the guidance of technical personnel in accordance with the requirements of the manual, and must not be careless. .
Low toxicity pesticides: The median lethal dose is 501 to 5000 mg/kg body weight. Such as trichlorfon, dimehypo, malathion, phoxim, acephate, dimethyl tetrachlora, butachlor, glyphosate, thiophanate, trifluralin, Bendazosone, Atlas Tsu et al.
Poisoning pesticides: The median lethal dose is 101 to 500 mg/kg body weight. Such as dimethoate, leaf glycosides, speed carbazole, enemy cough, 402, pyrethroid pesticides, etc.;
Highly toxic pesticides: The median lethal dose is 51 to 100 mg/kg body weight. Such as carbofuran, fluoroacetamide, cyanide, 401, zinc phosphide, aluminum phosphide, arsenic, etc.;
Poisonous pesticides: The median lethal dose is 1 to 50 mg/kg body weight. Such as monocrotophos, phosphine, methamidophos, Suhua 203,3911 and so on.
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