基于2003~2022年辽宁省农产品国际贸易投入产出数据,利用Super-SBM模型对辽宁省农产品国际贸易效率进行测度与评价,进一步运用Tobit回归模型分析了影响辽宁省农产品国际贸易效率的主要因素。研究发现:辽宁省农产品国际贸易效率水平总体良好,呈现波动上升的趋势;35%的年份为DEA弱有效,主要是规模效率未达到最优;65%的年份为非DEA有效,主要原因是第一产业就业人数、第一产业全社会固定资产投资、化肥施用折纯量存在投入冗余,而农产品进口金额则存在产出不足;农产品出口金额会对综合效率产生显著的正向影响,农林牧渔业总产值、化肥施用折纯量会对综合效率产生显著的负向影响。Based on the input-output data of international trade of agricultural products in Liaoning Province from 2003 to 2022, this paper uses the Super-SBM model to measure and evaluate the international trade efficiency of agricultural products in Liaoning Province, and further uses the Tobit regression model to analyze the main factors affecting the international trade efficiency of agricultural products. The results show that the international trade efficiency of agricultural products in Liaoning Province is generally good, showing a fluctuating upward trend;35% of the years are DEA weakly effective, mainly because the scale efficiency is not optimal;65% of the years are DEA ineffective;the main reason is that there is input redundancy in the employment of the primary industry, the investment in fixed assets of the whole society in the primary industry and the conversion of fertilizer application, while there is output deficiency in the import amount of agricultural products. The export amount of agricultural products will have a significant positive impact on the comprehensive efficiency, while the total output value of agriculture, forestry, animal husbandry and fishery and the converted amount of chemical fertilizer will have a significant negative impact on the comprehensive efficiency.
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