optimization of cropping pattern

Choosing the optimal cultivation model that is both environmentally sustainable and suitable for specific climatic conditions in each geographical region can be considered as one of the efficient solutions to solve the challenges and increase the profitability of agricultural activities.For this purpose, in this study, an attempt has been made to design the optimal pattern of crop cultivation in Miandoab plain, which is the fourth most important plain of the country, located in West Azarbaijan province.Optimizing the cultivation pattern was done in the form of two separate goals of maximizing profit and minimizing water consumption.For this purpose, the required data for the three years 2016-2018 were collected from various provincial and national institutions, and the average data of the mentioned three years were used to propose the optimal pattern of crop cultivation in the form of each of the mentioned goals.In this research, 12 important crops cultivated in this plain have been used.The results showed that the two crops of rainfed chickpeas and nut sunflowers, with the cultivation of the entire agricultural lands of the plain with approximately 57 thousand hectares and 5500 hectares, respectively, and a gross profit of 1614 billion rials, were introduced as the optimal model proposed with the aim of maximizing the gross profit.became.In the proposed cultivation model with the aim of minimizing water consumption, the re-cultivation of rainfed chickpeas and nut sunflowers on an area equal to 57.600 hectares and 5300 hectares will result in the optimization of water consumption.In other words, two goals of profit maximization and water consumption minimization will be achieved by sub-cultivating dry peas and sunflower seeds.

Excessive extraction of aquifers to produce agricultural products is reduced the amount of water in groundwater sources, in the manner that this amount decreasing follows irreversible effects in various areas. In order to decreasing difficulties resulting from decrease in amount of aquifer deciding in considerable level is needed. This matter has made balancing of aquifers as one of the important factors in water resources management. In this study, in order to recovery of groundwater sources and implementing extraction reduction in country's aquifers, as one of the equilibrium projects, optimization the cultivation pattern with economical approach and investigation changes farmer's profit with exploitation reduction scenarios to 1%, 3% and 5% From two popular perspectives and analytical comparisons between them is done in 1395. For optimize the cropping pattern, two perspectives of changing the cropping pattern have been used by NLP method and reduction of cultivated subspecies, and using PMP optimization method. results of using extraction reduction scenarios in Qazvin plain's aquifer, which has yearly deficiency to the value of 376 MCM showed that in the scenarios of groundwater extraction, the values of 21.2, 63.7 & 106.6 MCM of extraction are reduced from the aquifer of the case study. Also, the results of the analysis of the two planning methods showed that the NLP optimization model, gaining more economical profits than the PMP model.

One of the core elements of water management and increase agricultural productivity is the efficient use of available resources. Due to increasing demand for agricultural products, increase the productivity of scarce resources is essential. Optimal utilization of these resources, in addition to meet the demand of the community as a major goal, can also increase operating income to be followed. One of the solutions for increasing productivity in the agricultural sectoris reforming the pattern of cultivation according to different parameters. In this study, using economic criteria, water requirements and crop season in the TOPSIS multi-criteria decision, efficient products were selected. Furthermore, by combining these results with the parameters of the water and common time development of products using a genetic algorithm, the optimal cultivation area allocated to each product specified. In addition, by using GIS spatial capabilities and parameters of different locations and combined with optimized data, map the optimal model has been developed crops. The results show that using the models used and the capabilities of GIS, suitable cropping pattern can be achieved, and, on average, raised by about 25% efficiency and the use of available resources.

In recent years، the Determination of Crop pattern with purpose the use of Optimum Available resources was considerded by Researchers and governments in order to Increasing the farmers'' incoming. According to the Water Crisis، Factors of production Specially water as the most limitative factor in agriculture should be use Systematic and careful planning. In this study we determine the optimized crop pattern of Golestan dam irrigation and drainage network for maximizing the incoming of formers using of MMAS (maximum- minimum ant system). The Result show that the current cropping pattern is not optimize and with applying out suggested crop pattern، benefit per hectar land of plant would be increased especially in fall and summer cropping. Also the model result showed that in fall cropping because of some rainy days، some allocation of water need of crop would be supplied، And it may be saved up to 75 percent in water consumption with application Suggested cropping pattern that would be around 24. 5 MCM water. In case of Storage The Significant volume of water You can cultivate the More land in summer.