1.杀虫剂是指能够防止农、林、牧、卫生及贮粮等害虫的药剂。这类药剂的大多数只能杀虫而不能防病。杀虫剂是农药中发展最快、用量最大、品种最多的一类药剂。例如敌百虫、敌敌畏、乐果等都是用量很大的杀虫剂。 2.杀菌剂指一类对植物病原真菌、细菌有毒的物质,具有杀死孢子和菌丝体或抑制其发育的作用,可用于防治植物病害。根据杀菌剂这一名词的字意,应该是杀死病菌,但是许多杀菌剂只有抑制孢子萌发和生长的作用。例如波尔多液对多种真菌就只有抑制作用,菌丝体或孢子和药 1. Pesticides are those that prevent pests such as farming, forestry, animal husbandry, hygiene and stored food. Most of these drugs can only kill insects and can not prevent disease. Pesticides are the fastest growing pesticides, the largest amount, the largest species of a class of agents. For example, trichlorfon, dichlorvos, dimethoate, etc. are large amounts of pesticides. 2. Fungicides Refers to a class of plant pathogenic fungi, bacteria toxic substances, with the spores and mycelium kill or inhibit its development role, can be used to control plant diseases. According to the term germicide, it is supposed to kill pathogens, but many fungicides only inhibit the germination and growth of the spores. Bordeaux mixture, for example, has a suppressive effect on many fungi, mycelium or spores and medicine