The Study of the Effects of the Green Revolution on Agricultural CropsProductivity in Gilan Province Using GMM(A Case Study on Rice Production)

Present study, is an attempt to estimate the high yielding variety (HYV) of rice production in Gilan province. Accordingly, the information of the variables of the HYV of rice production, mechanization , improved seeds , irrigation , fertilizers and also pesticide consumption of this province during 1370 to 1387 has been collected . After estimating the model, using Time Series method and through the production function Cobb-Douglas, according to the research aim that is “Identification of the effects of factors such as mechanization, fertilizers, pesticides and use of modified seeds, on the green revolution in Iran", The variables that had been the most influences on production and then the performance in high yielding rice have been identified. Research results suggest that changes in use of modern machinery and technology, improved seeds, fertilizers, pesticides and insecticides, are effective implementation on the Green Revolution in Gilan province. Because, as specified in the estimated model, with an increase of improved seeds, the high yielding variety (HYV) of rice production 2.69 % would increase and also With an increase of irrigation, production of this type of rice 2.29 % would increase too which about both listed variables, the assuming of being stable other condition, should be considered. with an increase of ratio mechanization level to the total acreage in harvesting stage and with no change in other variables and conditions, this type of rice production decreased 3.11 % that this due to the use of other agricultural products specific machinery like wheat, in paddy rice in the stage of harvesting that causes yield reduction of this product. As is clear the results of the study the highest elasticity is related to improved seeds and the greatest negative impact is related to mechanization in harvesting stage.