The introduction of Ningxia trees generally after the introduction of a forest production, management, scientific research departments, introduction, personal introduction of the national local and orderly management of the dominant periods of the introduction. Before and after the introduction of a

Ningxia forestry plantations after the planting was planting, production management and research departments, the national local planting ornamentals personal orderly management-led, and planting several times. After planting a large number of new species, new species in the forest, widely used in t