Influence of Crop Pattern Correction on Reducing Fertilizer's Effects of Agricultural Activities: A Case Study in Fars Province

In recent years, the increased effects of agricultural systems on the environment concerned scientists and policy-makers in different countries. The indiscriminate use of chemical fertilizers and use of excessive ground water are included in these effects. Current study using a Multiple Goals Fuzzy Non- Linear Programming model, analyzed the possibility of ideals realization reducing consumption of fertilizers and water in compromising with maximizing gross margin, minimizing risk of production, and increased social benefits goals in the crop pattern of three cities located in three major weather Regions of Fars Province. Results showed that in many cases there isnt the possibility of complete ideals realization in the multiple goals model in comparison with single goal patterns. But considering the outcome and the relevant weight assigned to each of the goals by the decision maker consisting of the Fuzzy Composite Distance Function, appeared that the crop patterns based on multiple goals are superior to current patterns and even single goal pattern in supply of multiple compromised ideals. Implementation of these models in study areas has significant influence on reducing water and fertilizer uses in addition increasing the gross margin, reducing risk and increasing employment of labor in the region.