%0 Journal Article %T RESOURCE-SAVING TECHNOLOGIES OF AGRICULTURAL CROPS SELECTION IN THE ECOLOGICALLY BALANCED SYSTEM OF AGRICULTURE %A Shakirov, R.S. %A Bikmuhametov, Z.M. %A Hisamiev, F.F. %K crop rotation, fertilizer, productivity, plowing, profitability, productivity of arable land. %J Vestnik of Kazan State Agrarian University %D 2018 %N 12 %P 6 %I Kazan state agrarian University