运用各种模式研究农业地理问题是农业地理学发展的重要特点之一。国外许多农业地理学家的著作中都把模式作为在地理学理论基础上描述和解释研究对象的核心手段。下文就农业地理研究中的模式分类以及主要模式的内容作一简略的分析。一、农业地理学中的模式分类在农业地理学中,有两种既明显不同而又互补的建模方向。第一种是从简单的假设开始,逐步引入较复杂的内容,一直向实体逼近。第二种是从实体开始,逐步走向理论抽象。一般把按第一种方向建造的模式称为规范型模式,把按第二种方向建造的模 Using various models to study agricultural geography is one of the important features of the development of agricultural geography. Many foreign agricultural geographers in the writings regard the model as the core means of describing and explaining the research object based on the theory of geography. A brief analysis of the pattern classification in agricultural geography and the content of the main models is given below. First, the classification of patterns in agricultural geography In agricultural geography, there are two distinct and complementary modeling directions. The first is to start with simple assumptions and gradually introduce more complex content, always approaching the entity. The second is from the entity, and gradually move toward theoretical abstraction. The model built in the first direction is generally called a canonical model and the model constructed in the second direction