Construction de familles de modèles d'exploitations. Etude des possibilités d'application à l'agrégation de l'offre régionale des produits agricoles

摘要

The object of this article is to present the methods for building up regional supply functions of farm products and to measure their evolution. To estimate the supply function, the author at first classifies the farms in homogenous groups each represented by an average discriptive model. The criterion which has been used to obtain the homogeneity is the farm income. After that, the aggregate supply function for each product is obtained by Weighing the produced quantities in each model with the number of farms it represents. On the other hand, the results of the potential model calculations obtained by the budgeting method or parametric linear programming give informations about likely and possible medium-term evolutions of the regional descriptive models. The relevance is important on the regional level for advisers in farm management, the extention workers and the statisticians, and on the national level for the interregional planning.