Determining the Optimal Cultivation Pattern of Crops with Emphasis on Reducing the Use of Chemical Fertilizers in Pariz District of Sirjan County, Iran

The general purpose of this study is to develop a cultivation model based on reducing the level of chemical fertilizer application in the Pariz section of Sirjan city located in Kerman province. In order to explain the objectives of the study, a multi-objective planning approach was used. Also, due to the difference between the activity scale of farmers, first using cluster analysis and based on the activity scale were divided into two groups (farmers with less than 3 hectares of cultivated area and farmers with more than 3 hectares of cultivated area). Finally, the cultivation patterns were prioritized using the fuzzy approach. The results of optimal patterns for the first group of farmers showed that only two wheat and barley crops were selected in the optimal patterns. Based on the results, the optimal model for the first group of operators has less product variety than the current model. The results showed that for the second group of farmers, in the pattern of minimum chemical fertilizer consumption, the maximum gross yield remained at its current level while the amounts of water and chemical fertilizer consumption are lower than the current model for the second group of farmers. The results of ranking different patterns using fuzzy approach according to the objectives of increasing gross yield, reducing water consumption and chemical fertilizers in the second group of users showed that lower priority patterns are patterns that preferably maintain gross returns at its current level.