Ijtimoiy-gumanitar fanlar

DISTRIBUTION OF HUMUS AND NUTRIENTS IN THE IRRIGATED SOILS OF THE NORTHERN PART OF THE FOOTHILL ZONE OF THE TURKESTAN RANGE

irrigated typical serozems, meadow soils, salinization, mobile phosphorus, exchange potassium, humus, fertility.

Authors

  • А ИСМОНОВ Тупроцшунослик ва агрокимё илмий тадцицот институти б. ф. н. катта илмий ходим, Uzbekistan
  • Н ЩАЛАНДАРОВ Тупроцшунослик ва агрокимё илмий тадцицот институти б.ф.ф.д. (PhD) кичик илмий ходим , Uzbekistan
  • У МАМАЖАНОВА Тупроцшунослик ва агрокимё илмий тадцицот институти, кичик илмий ходим, Uzbekistan
Vol. 3 No. 3.2 (2019): O'zMU xabarlari. Tabiiy fanlar
Articles

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As a result of research, the content of humus and nutrients, salinization of the soil profile and their distribution were
clarified. The studied irrigated typical serozems and meadow soils of the piedmont zones of the region, according to
the degree of salinity, are slightly saline, less often medium saline. Soils are low in terms of total humus content,
low in content of mobile phosphorus in terms of content, and medium and sufficiently provided with exchange
potassium. According to the state of the soil cover for the studied period (2019), it should be noted that there has
been a tendency to worsen some indicators of irrigated soils The degree and chemistry of saline irrigated soils of the
monitoring key plots studied in the region are mainly changed from sulfate to chloride-sulfate type of salinization,
sulfate type of salinity is preserved on some areas.