防治鼠害的方法有化学灭鼠、生物灭鼠、器械灭鼠等。利用化学药剂灭鼠仍然是最经济有效的方法之一。目前常用的灭鼠剂主要有杀鼠灵、敌鼠钠、磷化锌等。1.杀鼠灵。是一种慢性灭鼠剂,须连续多次投饵,使鼠多次取食,利用累积毒性杀鼠。杀鼠灵作用于肝脏,使凝血酶原减少,毛细血管壁变脆易裂,死于肝脏出血。杀鼠灵急性毒力很小,例如一次性投饵对褐家鼠致死量高达325毫克;而每次食入0.1毫克,连续五天,累积量只需0.5毫克就可杀死。杀鼠灵适口性好,老鼠无拒食性,投饵两三天后,老鼠食饵量并不减少,甚至行动艰难(已中毒)的老鼠仍来取食。因此,杀鼠灵必须采 Rodent prevention and control methods have chemical rodent, bio-rodent control, rodent and other equipment. Rodent use of chemical agents is still one of the most cost-effective methods. The rodenticides currently used are mainly warfarin, diphtheria sodium, zinc phosphide and the like. 1. War murder. It is a chronic rodenticide that has to be fed several times in succession to feed the rats many times and to use cumulative toxicities to kill the rats. Warfarin effect on the liver, reducing prothrombin, capillary wall brittle crack, died of liver bleeding. Acute toxicity of warfarin is very small, such as a one-time feeding on brown house mouse lethal dose of up to 325 mg; and each ingestion of 0.1 mg, for five consecutive days, the cumulative amount of only 0.5 mg can kill. Warfarin psychic good palatability, mice without food, feeding two or three days, the amount of food does not reduce the amount of mice, and even difficult to move (poisoned) rats still come to eat. Therefore, war murderer must take