Document Type : Original Article
Authors
1 1. Mohamed Khider University of Biskra, Faculty of Exact Sciences and Sciences of Nature and Life. Department of Agronomic Sciences. Biskra-Algeria. 2. Scientific and technical Research center on the Arid Regions C.R.S.T.R.A. Biskra, Algeria
2 Laboratory diversity of ecosystems and dynamics of production systems agriculture in arid zones, university Mohamed Khider. Department of Agricultural Sciences. Biskra; Algérie
3 Scientific and technical Research center on the Arid Regions C.R.S.T.R.A. Biskra, Algeria
Abstract
Keywords