Application of under-film drip irrigation for high yield yields in saline soils and global warming

¹ Scientific Research Institute for Seed Breeding and Agricultural Texnology of Cotton Growing, Bukhara Scientific Experimental Station, No.309, B. Nakshband, Bukhara, 200100, Uzbekistan
² Bukhara State University, st. M. Iqbol 11, Bukhara 200100, Uzbekistan

^* Corresponding author: r.yunusov@buxdu.uz

Abstract

The use of water- and resource-saving technologies for the cultivation of cotton on saline soils in the context of global warming is considered. In the studies, drip irrigation was used under the film, without a film through a row and furrow irrigation. In the control, 3000 m³/ha of water was used for leaching, 4200 m³/ha for vegetation, productivity - 40 c/ha, for vegetation for 1c crop - 105.0 m³/ha of water. With drip irrigation without a film and under a film, it was watered 21 times, the water consumption was respectively: 3770-3465-m³/ha, and with salt washing - 2400-2200m³/ha, the yield was 53-64 centners/ha. To obtain 1 centner of yield during the growing season, 71.13-54.40 m3/ha of water was consumed, compared to the control, less by 33.86-50.86 m³/ha. For growing 1s. harvest, spending 71.13-54.14 m³/ha of water, 13-24 centners/ha of yield increase was obtained, water savings for cotton is 1.48-1.94 times lower than the control. Scientifically substantiated, saving water, resources, eliminating excessive consumption of nutrients due to the accumulation of CO₂ under the film, pH neutralization and soil desalination, successful completion of biochemical processes, improved absorption of phosphorus by the plant and the absence of fusarium, verticillium wilt.