Keywords:
- irrigated soils
- humus
- bioproduct
- soil fertility
- cotton-autumn wheat-repeated and intermediate crops
- green manure
- organic
- organic-mineral
- biologically activated fertilizer
- biohumus
Abstract
Based on the research carried out in previous years on non-saline soils of the serozem zone of the republic, agrotechnology has been developed, aimed at enriching the soil with organic matter, improving its chemical, physico-chemical properties, increasing fertility and crop yields of the cotton complex. Between the years 2009-2011 research conducted on low saline takyr meadow soils of desert zone on the use of the agricultural technology. The essence of this agrotechnology is, when growing the main crops - cotton and winter wheat, alternating them and sowing repeated, intermediate crops so that the soil surface is covered with plants throughout the year, which helps to prevent secondary salinization, erosion, etc. It should also be noted , according to the given agrotechnology, it is obligatory to bring high norms of organic fertilizers in the amount of 20 t/ha and more for two to three years for each basic crop, with a decrease in the norm of mineral fertilizers. The results of three-year studies on this technology in 0-50 cm soil layer showed an increase in the organic matter content depending on the experiment variant from 1.2 and 3.68 tons/ha. At the same time, cotton yields increase by 4.3 and 5.6 centner/ha, wheat - 8.8 and 13.5 centner/ha, mash - 1.6 and 2.3 centner/ha, and net profit was 592.6 thousand soums, profitability by 50 percent.
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