From the Wikipedia page 
Nukus District (Uzbek: Nukus tumani, Karakalpak: No‘kis rayonı) is a district of Karakalpakstan in Uzbekistan. Population 41,890 (1989). The capital lies at Oqmang‘it.
Largely an agricultural district, the Korakalpoktomat enterprise, active in the area uses drip irrigation methods in cotton growing. Due to this, the crop capacity reaches 70 centners per hectare, which is among the country’s highest figures.