плодородие почвы(The status of a soil with respect to the amount and availability to plants of elements necessary for plant growth; Статус почвы в отношении количества и доступности для растений элементов, необходимых для их роста)
плодородие земель(Soil fertility refers to the ability of a soil related to plants its ease of tillage, fitness of seedbed, and impedance to seedling emergence and root penetration by providing nutrients and suitable soil structure to support the plants/trees growth. WK Alexander Demidov)
