(a) The regulations to be adopted by the directors under the provisions of this subchapter may include:
(1) Provisions requiring the carrying out of necessary engineering operations, including the construction of terraces, terrace outlets, check dams, dikes, ponds, ditches, and other necessary structures;
(2) Provisions requiring observance of particular methods of cultivation including contour cultivating, contour furrowing, lister furrowing, sowing, planting, strip cropping, seeding, and planting of lands with water-conserving and erosion-preventing plants, trees, and grasses, forestation, and reforestation;
(3) Provisions requiring the retirement from cultivation of highly erosive areas or of areas on which erosion may not be adequately controlled if cultivation is carried on;
(4) Provisions for such other means, measures, operations, and programs as may assist conservation of soil resources and prevent or control soil erosion in the district, having due regard for the legislative findings set forth in §§ 14-125-102 — 14-125-104.
(b) The regulations shall be uniform throughout the territory comprised within the district except that the directors may classify the lands within the district with reference to such factors as soil type, degree of slope, degree of erosion threatened or existing, cropping and tillage practices in use, and other relevant factors and may provide regulations varying with the type or class of land affected but uniform as to all lands within each class or type.