Keywords:
- irrigated takyr-meadow soils
- mineral and organic fertilizers
- phosphogyps
- ammonium and nitrate nitrogen
Abstract
The article considers the influence of mineral and organic fertilizers and phosphogyps (FG) on the change in fertility and content of ammonium and nitrate nitrogen of irrigated takir-meadow soils of the Surkhandarya region. The results of the study show that the use of 30 t/ha of cattle manure, as well as 2 and 4 t/ha of FG against the background of mineral fertilizers, taking into account the meliorative state of the soil, changed the fertility and agrochemical properties of the soil, and ensured an increase in the content of ammonium and nitrate nitrogen in the soil regarding the control option. On the options (9; 10), where 30 t/ha of manure are introduced along with phosphogyps (2 and 4 t/ha) against the background of N250P175K125, at 0-30 cm of the soil layer the content of ammonium nitrogen was 34.3 and 35.2 mg/kg, respectively, which, was 19.3 and 20.2 mg/kg more than control, and the amount of nitrate nitrogen was 37.7 and 38.8 mg/kg, which is 22.3 and 23.4 mg/kg more, than in control.
References
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