The Feasibility study of linear programming and fuzzy multi-objective two-step in the development optimal cropping pattern with emphasis on water resources (case study of Golpaygan city)

Seifi, Hamid (2017) The Feasibility study of linear programming and fuzzy multi-objective two-step in the development optimal cropping pattern with emphasis on water resources (case study of Golpaygan city). Masters thesis, University of Mohaghegh Ardabili.

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Abstract

Given the increasing importance of water resources, optimal allocation of these resources in crop operations, especially in the formulation of a cropping pattern, is necessary. In this study, to determine the optimal model for cultivating crops, a multi-objective two-stage fuzzy linear programming was used in the central part of the eastern Brobroud of the Golpaygan County. The required information was collected by interviewing the farmers of the area using random sampling in the year of 1995-96. Also, in order to determine the optimal model of cultivation with emphasis on the optimal use of water resources, a multi-objective fuzzy programming model and its two-stage method have been used and then, the results of a two-stage multi-objective fuzzy model with max- min multi-objective fuzzy model and current crop pattern were compared. The results of the studies showed that the water consumption decreased than the max-min method and the level of gross yield and fertilizer application did not change compared to the max-min method. The results also showed that two-stage multi-objective linear programming model in comparison with multi-objective fuzzy linear model has better results in determining the optimal model of cultivation and optimal use of water resources in the studied area.

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