Investigations, directed on salinity control and productivity,
increase of hardly reclaimed gypsum bearing saline lands
of south-east Golodnaya Steppe on basis of leaching intensive
technology on a background of deep loosing and horizontal
drainage with set of agro-reclamation measures. Climate
is sharply continental.
Soils vary from light sandy loam and loamy to hard loamy-clayey with
high gypsum content and salinity.
Experimental production plot area is 160 ha.Irrigation source is Golodnostepsky canal. Main irrigation
network is chute.Drainage system is presented by subsurface drainage.
As a result of investigations, it is recommended to
use leaching irrigation on short furrows (50-100 m) with
row-spacing 45 cm by 3 - 4 gifts with depth 2 -3 th.m3/ha
and perfect leaching technique. Advantage of recommended
leaching method of strongly saline lands is 30 -40 % water
saving; excavation volume reduction avoiding some technological
operations and receiving additional production from leached
area thanks to soil desalination uniformity. |
