The equalized assessed value of a farm, as defined in Section 1-60 and if used as a farm for the 2 preceding years, except tracts subject to assessment under Section 10-145, shall be determined as described in Sections 10-115 through 10-140. To assure proper implementation of Sections 10-110 through 10-140, the Department may withhold non-farm multipliers for any county other than a county with more than 3,000,000 inhabitants that classifies property for tax purposes.