TY CONF TI INFLUENCE OF LIQUID SWINE MANURE ON ORGANIC CONTENT SUBSTANCES AND AMOUNT OF EXCHANGE BASES IN CHERNOZEM SOILS KW typical chernozem KW meadow-chernozem soil KW pig manure KW organic substance KW sum of exchangeable bases. JO XIII All-Russian scientific-practical conference of young scientists «Achievements and prospects of development of the Russian agriculture", dedicated to the memory of R.G. Gareev AU Barsukova, V.. AU Milyaeva, K.. AU Nasonova, K.. AU Stekol'nikov, K.. PY 2023 PB TRIA FRC Kazan Scientific Center of RAS