All provisions contained in Section 17 as herein amended, Sections 18 and 19 and 21 of Chapter 39 of Session Laws of 1921 and Section 20 N.M. Stat. Ann. § 73-11-13 to 73-11-17 as herein amended shall be understood and construed as applying to agricultural lands lying wholly outside of the boundaries, and not subject to any of the provisions, of a local improvement district formed for the betterment, improvement or protection of lands within and contiguous to the corporation [corporate] limits of a municipality and which naturally are or would be included in the local improvement district of such municipality nor shall local improvement districts within the meaning and intent of this act [73-11-13, 73-11-16, 73-11-18 N.M. Stat. Ann.] be held to cover lands within and contiguous to the corporate limits of a municipality, town or village whether such lands be or may not be agricultural lands subject to or in a state of cultivation but which geographically are so located as to share in the benefits of any improvement or protection works planned or built by the municipality.