基于12个棉花主产区1994—2018年的投入产出数据，在面板随机前沿模型估计结果的基础上，利用面板分数响应模型而非Tobit模型实证分析了临时收储政策、目标价格补贴政策对棉花技术效率的影响，结果表明：1994年以来，棉花主产区的技术效率逐年提高，且呈收敛趋势；尽管临时收储政策、目标价格补贴政策都有助于提高棉花技术效率，但两者对棉花技术效率的影响存在显著差异，相对临时收储政策而言，目标价格补贴政策的影响更大；同时，实施良种补贴政策、改善农业灌溉条件、提高棉花生产机械化水平也有助于提高棉花技术效率。

Based on the input-output data of 12 main cotton producing areas from 1994 to 2018 and the estimation results of panel stochastic frontier model, the effects of temporary purchase and storage policy and target price subsidy policy on cotton technical efficiency have been studied through using panel fractional response model instead of Tobit model. The study shows that the technical efficiency of the main cotton producing areas has been increasing year by year since 1994, yet showing a convergence trend. Although both temporary purchase and storage policy and target price subsidy policy could improve cotton technical efficiency, there are significant differences in their impact on cotton technical efficiency. Compared with temporary purchase and storage policy, target price subsidy policy has greater impact. The study also found that implementing seed subsidy policy, improving agricultural irrigation conditions and raising the level of mechanization of cotton production could help to enhance the technical efficiency of cotton.

F326.12