Multiproduct Cost Relationships for Retail Fertilizer Plants
用短期超越对数成本函数分析零售化肥厂的多产品成本关系，发现增加产量和多元化经营（如涉足无水氨）能降低平均成本，且样本企业存在厂房设备过度投资。
Abstract Retail fertilizer plants produce a number of products and services. To analyze the relationship between cost and output for these multiproduct firms, a short‐run, translog cost function is estimated using pooled data. Measures of economies of scope and scale are calculated. Results indicate plants can lower average cost by increasing output and by diversifying into anhydrous ammonia. Furthermore, preliminary evidence indicates that firms in the sample are overinvested in plant and equipment.