TY  JOUR
TI  Biological productivity of ultra-early corn hybrids in various soil and climatic zones of the Ural region
KW  corn
KW  ultra-early hybrids
KW  soil and climatic zones
KW  heat and moisture resources
KW  biological productivity
KW  crop structure
KW  exchange energy
KW  starch
JO  Agrarian Bulletin of the
AU  Panfilov, A.E.
AU  Zezin, N.N.
AU  Ovchinnnikov, P.Y.
PY  2022
IS  218
PB  Ural State Agrarian University