Scale efficiency in Danish agriculture: an input distance-function approach
利用1985-2006年丹麦农场数据，通过投入距离函数方法分析不同农场类型的规模效率变化，发现养猪场和奶牛场效率提升，而农作物农场规模效率最低，扩大规模可提高生产率。
This paper presents the results of an analysis that predicts the scale efficiency of indi-vidual farms and analyses the differences in scale efficiency over time and between farms. Representative farm account data for 1985–2006 are used, and the study applies stochastic frontier analysis using an input distance–function approach. The results show that pig farms have improved their input scale efficiency significantly over time, as have dairy farms during the last few years after a period of constant scale efficiency. Crop farms have the lowest scale efficiency, and there is a consider-able potential for improving productivity in the cash crop sector by increasing the size of the farms. It is shown that a change in scale efficiency and technological change are the major components of aggregate productivity changes for all farm types.