采用能值分析的方法,对农业生态经济系统的投入产出进行分析,并选取了净能值产出率、能值投资率、环境负载率、可持续发展指数、系统生产优势度5个指标进行评价.结果表明:武安市能值投入与产出均处于上升态势,能值投资率不断上升,但净能值产出率降低,农产品的价格竞争优势逐步丧失；同时随着不可更新工业辅助能的加大,环境压力也在日益增加.在未来的农业发展中,要更加注重农业发展与生态环境的协调,实现农业可持续发展.%Using the method of emergy analysis,we analyze the input and output of agro-ecological economic system,and select five indicators (net emergy yield ratio,emergy investment ratio,environmental loading ratio,emergy sustainability index,and dominance of emergy yield system) for assessment. The results show that the emergy input-output in Wu' an City is in general on the rise; the emergy investment ratio rises constantly, but the net emergy yield ratio decreases, and the comparative advantage in the prices of agricultural products is gradually lost. At the same time, with increase in the non-renewable industrial support emergy, the environmental pressures are also mounting. In the future agricultural development,it is necessary to pay more attention to the coordination between agricultural development and ecological environment, achieving sustainable development of agriculture.
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