城市苍蝇的来源,除了居民生活中的废弃物孳生外,还有许多生产单位(包括加工和饲养生产)在生产过程中为苍蝇的生长繁殖提供了极为有利的条件,因此,这类行业是城市蝇类孳生繁殖的一个重要方面。一、城市蝇类孳生行业的类型: 从行业的生产、加工的品种(孳生物)、方式来分(不包括生活垃圾和人粪): The source of urban flies, in addition to the breeding of waste in residential life, there are many production units (including processing and breeding production) in the production process for the growth and reproduction of flies provided extremely favorable conditions, therefore, these industries is the city An important aspect of fly breeding. First, the city fly breeding industry types: from the industry’s production and processing of species (breeding), the way to points (excluding domestic waste and human waste):