The article presents the results of a study of the influence of summer and winter siderat crops on macro, micro-aggregative composition, agrophysical, water properties and nutreant regime of the soil. It was revealed that the use of winter siderat crops - peas and peas + radish oil improves the aggregative composition, agrophysical, water properties and nutreant regime of the soil. At the same time, in a layer of 0-30 cm soil, the content of humus increases from 0.01 to 0.02%, nitrate nitrogen from 7.40 to 10.05 mg / kg, mobile phosphorus from 14.4 to 16.3 mg / kg and exchange potassium 10 , 36-21.10 mg / kg.