Abstract: This paper uses DEA model and Malmquist model to attempt to measure the efficiency and the development of total factor productivity of Xinjiang agricultural machinery purchase subsidy policy from the two perspectives of time sequence development and regional heterogeneity. The results show that: (1) From the perspective of time series development, the overall technical efficiency (TE) of Xinjiang policy implementation within the sample period from 2004 to 2014 has improved year by year, the key driving force lies in the favorable drive of the scale efficiency (SE) increase. Similarly, the TFP (Total Factor Productivity) within the sample period also basically showed an upward trend with an average annual increase of 3.4%.And the technological progress with an average annual increase of 3% was the main driving force of its increasing year by year.(2) From the distribution of regional differences, there exist significant differences of the comprehensive technical efficiency value in all parts of Xinjiang province (city), making it a bulk type distribution.The main reason lies in the scale efficiency of regional differences.In addition, the TFP growth rate of subsidy policy implementation in northern area was significantly higher than that of eastern and southern regions in Xinjiang. Yet the main factors restricting the efficiency of the implementation of the subsidy policy in southern region lied in the slow development of technology progress.Therefore, it is necessary to adjust the guide effect of the policy for Xinjiang. On the basis of increasing the purchase of agricultural subsidies, it needs to further enhance the coordinated development between regions in order to lay a solid foundation to realize the agricultural modernization in Xinjiang.

Key words: Data Envelopment Analysis, Malmquist Index, Agricultural Machinery Purchase Subsidy Policy, Efficiency Evaluation, Regional Differences