The Creation of Green Zone of Astana City: History, Current State and Prospects.

History and prospects of creation of green zone of Astana city, the results of scientific research of safety and growth of trees and shrubs on saline soils are presented in the article. According to 3-year observations revealed that the application of phosphogypsum in soil as an ameliorant, does not reduce the content of easily soluble toxic salts, but the minimum application rates (15 t/ha) is optimal. The best survival rate and higher growth had annual cultures of Ulmus pinnato-ramosa on the plot by introducing into the soil a reducing agent AridGrow (respectively of 70.7 %, and 44.3 cm). .