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

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.