The FSRS is designed by the object-oriented method in which the condition that determines a farming system feasible or unfeasible are accumulate temperature (growth period) and precipitation.

• 采用了面向对象的知识表示方法，建立了黄土高原地区种植制度设计专家系统，系统以热量(生育期)和降水作为具体地区种植制度可行与否的判断参数。