00615naa#a2200193#i#450# EN\\bibl\79319 20260220045804.5 1819-4036 20160525b2016####ek#y0engy0150####ca RUS RU THE INFLUENCE OF IRRIGATION ON PHYSICOCHEMICAL PROPERTIES OF ORDINARY CHERNOZYOM OF NORTHERN KAZAKHSTAN Journal article Krasnoyarsk Krasnoyarsk State Agrarian University 2016 6 с. Journal article local Плодородие. 631.452 RUS Vasilchenko N I Yumankulov R V sej.kgau.ru