TY JOUR TI FEATURES OF THE STRUCTURE OF THE SOIL COVER OF THE NORTHERN PART OF THE AKTAY-SHENTALA LANDSCAPE LOW - LYING AREA KW morphological structure KW granulometric composition KW humus content KW humus reserves KW sum of absorbed bases KW agrochernozems JO Agrobiotechnologies and digital farming AU Gaffarova, L.G. AU Belyaev, S.M. PY 2023 IS 2 PB Kazan state agrarian University