بررسي اثر سياست حمايت دولت از محصولات زراعي بر رشد عوامل توليد در ايران

Investigating the Effect of Government Price Support Policy of Agricultural Crops on Factor Productivity Growth in Iran

Agricultural sector has long been strongly supported in Iran. The main purpose is to show the relationship between price support and total factor productivity growth. This study is restricted with the Iranian agricultural sector and data has been gathered the period from 1366-o7 to I377-78. The selected crops include wheat (irrigated, rain - fed), barley (irrigated, rain - led), rice, cotton, sugerbeet and potato. Using by pooled cross section and lime series data and the suitable model, efforts have been made to answer the following questions. Is there any relation between price support and productivity growth in agricultural products? Is the impact of price support unproductivity growth in agricultural products same across different crops? The results obtained show that the average productivity growth in irrigated crops is negative and in rain - led crops is positive. Also, the Statistical test demonstrates that productivity growth is positive and significant at ten percent confidence interval for only three crops. that is, wheat (rain-fed), parley (rain-fed) and sugerbeet.