%0 Journal Article %T METHODS OF COMPLEX EXPERIMENT OF DETERMINING THE DEPENDENCE OF THE TRACTOR PROPELLER PRESSURE ON THE SOIL ACCORDING TO THE TRACTOR’S PARAMETERS, PROPELLER AND PHYSICAL AND MECHANICAL PROPERTIES OF THE SOIL %A Khafizov, R.. %K Tractor, wheel pressure on the ground, the theory of similarity, similarity criteria, soil density, soil hardness, planning of experiment. %J Vestnik of Kazan State Agrarian University %D 2015 %N 10 %P 6 %I Kazan state agrarian University