НОАНЪАНАВИЙ ЎҒИТ – ТУПРОҚ МАЛҲАМИ

In the experiments carried out in the conditions of typical virgin soils of the Tashkent region under the 1:1 crop rotation scheme (cotton : wheat) the application of mineral fertilizers with the NPK norm: 200-140-100 and 150-105-75 kg/ha with the additional appli-cation of bentonite clays in the amount of 1500- 3000-4500 kg/ha for dying before the sowing of winter wheat, as well as irrigation regimes with a predetermined humidity of 60-70-60% and 70-80-70% of LFMC revealed that when irrigation is performed under the irrigation regime of 60-70-60% from LFMC, a decrease in the bulk mass in the 0–30 cm soil layer by 0.08 g/cm3 is ob-served, and in the 30–50 cm layer it is 0.03 g/cm3, permeable The soil height increased by 33 m3/ha. When the irrigation regime was 70-80-70% of the LFMC, the bulk mass in the 0–30 cm soil layer decreased by 0.09 g/cm3, and in the 30–50 cm layer by 0,07 g/cm3, the water permea-bility of the soil increased by 42 m3/ha.