1.农用杀菌剂的种类农用杀菌剂是用来防治植物病害的药剂,有两种类型——保护性杀菌剂和内吸性杀菌剂。(1)保护性杀菌剂防止病害侵入。它在植物体外或体表直接与病原菌接触,杀死或抑制病原菌,使之无法进入植物,从而保护植物免受病原菌的危害。主要有硫及无机硫化合物,如硫磺悬浮剂,固体石硫合剂等;铜制剂,主要有波尔多液,铜氨合剂等;有机硫化合物,如福美双、代森 1. Types of agricultural fungicides Agricultural fungicides are used to control plant disease agents, there are two types - protective fungicides and systemic fungicide. (1) protective fungicide to prevent disease invasion. It in vitro or in vitro directly contact with pathogens, kill or inhibit the pathogen, so that it can not enter the plant, thus protecting the plant from pathogens. Mainly sulfur and inorganic sulfur compounds, such as sulfur suspension, solid stone sulfur agent; copper preparations, mainly Bordeaux mixture, copper ammonia mixture; organic sulfur compounds such as thiram, desen