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农药的品种很多,为了研究和使用方便,可根据其比学结构、用途以及原料的来源进行分类。一、按化学结构和用途分类1.杀虫剂①有机磷杀虫剂:一般以触杀和胃毒作用为主,如放百虫、马拉硫磷、乙酰甲胺磷等;有些尚有很强的内吸作用,如氧化乐果、3911;具有薰蒸作用的如敌敌畏、二溴磷等。多数有机磷杀虫剂兼有杀螨作用,如乐果和乙硫磷。②氨基甲酸酯类杀虫剂:以触杀作用为主。多数品种对叶蝉、飞虱效果突出,如西维因、速灭威、
Pesticide variety, for research and ease of use, according to their structure, use and raw materials of the source classification. First, according to the chemical structure and use classification 1. Pesticides ① organophosphate pesticides: the general role of contact and stomach poisoning, such as pest insects, malathion, acephate, etc .; some are still very Strong systemic action, such as omethoate, 3911; has fumigation as dichlorvos, dibromide and so on. Most organophosphate insecticides have acaricidal effects, such as dimethoate and ethion. ② carbamate insecticides: to touch the main role. Most varieties of leafhoppers, planthopper outstanding results, such as the West Vital, speed off Viagra,