Analysis of Productivity of Gilan province rice conversion industries by Production Function and Data Envelopment Analysis

High rates of wastes in rice Conversion Industriesat Gilan Province Resulting hugelossesto theeconomy ofthefarmersand reveals low productivity of factors are used in processing paddy to white rice. so Anychangeinefficient and effectiveuseofinputsDepends onmeasuring total productionsystemproductivity andto identify factorsaffecting it.The main goal of this research is measurement of productivity and evaluate of factors affecting on it in Gilan province rice conversion industries. a survey was conducted and the required data were collected by questionnarie from 031samples determined through stratified sampling method. We have used Production Function to measure productivity and evaluate of factors affecting and for ranking of factories Data Envelopment Analysis method have been used. results showed that length of paddy on the surface of dryer machine, Technology gap and gap between actual and potential production have negative effect and factors such as capital intensive, using native varieties, education of factory manager and ratio of paddy purchased by factory to total consumed paddy have positive effect on TFP.