Estimation of productivity, structure composition and nitrogen mobile form availability in the perennial leguminose grass sowings of the Krasnoyarsk forest steppe leached chernozem

The comparative productivity estimation of Spanish trefoil and eastern galega in the forest-steppe zone conditions is given. It is determined that the tendency to increase of the agronomical valuable fraction (AVF) share in macroaggregate structure of the soil which is planted by eastern galega is shown. The processes of mineral nitrogen mobilization under the researched herbs give way to the synthesis of its organic easy hydrolysable forms.