ВЛИЯНИЯ ГЛУБИНЫ ОБРАБОТКИ ПОЧВЫ ДЛЯ ХИМИЧЕСКОМ МЕЛИОРАЦИИ В ПЕРВЫЙ ГОД СЕЛЬСКОХОЗЯЙСТВЕННОГО ОСВОЕНИЯ

Abstract

Development of soda saline soils of the Ararat valley has certain difficulties caused by the great heterogeneity of the mechanical composition. According to the instructions, in the preparation of the soil for chemical melioration was provided after planning produce loosening depth of 60 cm, but there has not been determined by the heterogeneity of the lithological structure of soil. Our treatment of soil to a chemical melioration was carried out depending on mechanical composition and from the lithological structure, i.e. in the light and medium loam conducted plowing, with heavy loam - loosening up to 50 cm depth, and the mechanical clay composition - tillage to a depth of 100 cm. This method of soil processing to the chemical melioration gave a positive effect, the whole area (24 hectares) was fully meliorated, salts decreased to 0.2-0.4 % where a half of salts are caused by salts CaS0₄, MgS04, and exchange Na 2-3 mg EQ/100 g of soil. On the first year of agricultural development it is received on the average 23 c/ha of winter wheat, and on the second year - 60 c/ha of lucerne in the first year of cultivation.