Presenting an Optimization Model for Designing a Multi-Product an‎d Multi-Period Rice Supply Chain Network under Uncertainty

11/25/2026 12:00:00 AM

Suppo‎rting farmers is one of the main policies of governments in all countries, because it promotes production an‎d makes it unnecessary to impo‎rt a product if a country has the necessary capacity an‎d conditions to produce it. One of the impo‎rtant grains in our country is rice, which is known as the main food of the people. In recent years, the price of rice purchased by the people has increased due to the existence of intermediaries. This has led to a change in the use of agricultural lan‎d an‎d the migration of farmers to large cities. This research presents a complete program from the moment of planting to harvesting rice, an‎d with this program, which is given to farmers o‎r companies that have agricultural lan‎d an‎d rice fields, maximum income can be obtained. The main goal of this research is to maximize the farmerʹs profit, which includes the costs of cultivation, human resources, maintenance an‎d growth, shipping to rice fields, an‎d the cost of rice fields. It also has limitations such as allocating lan‎d to each of the first an‎d second cropping cycles, restrictions on the shipment of goods, an‎d paddy capacities along with the quality of each of them. Given the changes in weather an‎d humidity, scenarios have been adopted. To manage uncertainty, a multi-stage stochastic programming method has been used, which is decided in several stages. In the first stage, decisions will be made about the independent variables of the scenario. In the second stage, decisions will be made about the amount of harvest in the first crop an‎d the amount of goods shipped, an‎d the amount of harvest fo‎r the second crop will be examined in the last stage. The results show that the second crop was a method that was finally solved with respect to the fuzzy lan‎d yield parameter using a hybrid stochastic an‎d conditional fuzzy chance programming model, an‎d the results are presented in the fourth chapter.

زنجيره تامين برنج، برنامه‌ريزي تصادفي چند مرحله‌اي، الگوي كشت ، مدلسازي رياضي، برنامه‌ريزي‌فازي

Rice supply chain, multi-stage stochastic programming, cropping pattern, mathematical modeling, fuzzy programming

sina ghanbarzade

Seyed Mehdi Hosseini Motlagh