Yield formation of winter wheat on Calcic Cernozem soils under semiarid climatic conditions

absorption d'eau cantidad de semilla requerida caracteres de rendimiento chernozem chernozems composante de rendement crop yield cultivos de invierno culture d'hiver fertilisation fertilizer application irrigation par aspersion plant water relations relaciones planta agua relation plante eau rendement des cultures rendimiento de cultivos saxe-anhalt saxony-anhalt sowing rates sprinkler irrigation triticum aestivum water uptake winter crops yield components