ﺍﺻﻼﺡ ﺍﺭﺍﺿﯽ Land improvement

ﻫﺮ ﺗﻐﯿﯿﺮی ﺩﺭ ﺯﻣﯿﻦ ﮐﻪ ﺑﺎﻋﺚ ﺍﻓﺰﺍﯾﺶ و ﺑﻬﺒﻮﺩ ﺑﻬﺮﻩوﺭی ﺁﻥ ﺷﻮﺩ.