TY JOUR TI CONTENT AND RESERVES OF MOBILE HUMIC SUBSTANCES IN AGRO-CHERNOZEM WHEN USING MICROALGAE ON SPRING WHEAT KW Chlorella vulgaris KW Arthrospira platensis KW humus KW mobile humic substances KW humus reserves KW agrochernozem JO Bulletin of KSAU AU Kurachenko, N.L. AU Abakumova, N.N. PY 2026 IS 0 PB Krasnoyarsk State Agrarian University