КАЛИЙНЫЙ РЕЖИМ ОРОШАЕМЫХ ЧЕРНОЗЕМОВ НА РАЗНЫХ АГРОТЕХНИЧЕСКИХ ФОНАХ

О.И. ЦУРКАН, С.И. БУРЫКИНА*, Я.М. БИЛАНЧИН, А.В. ПЯТКОВА Одесский национальный университет имени И.И. Мечникова *Одесская государственная сельскохозяйственная опытная станция Национальной академии аграрных наук Украины

Rezumat

POTASSIUM REGIME OF IRRIGATED CHERNOZEMS IN  VARIOUS AGROTECHNICAL BACKGROUNDS

The changes under the influence of irrigation and fertilization systems of the fractional potassium composition of the soils in the Southern Ukraine, Chernozem ordinary and Chernozem southern are considered. The amount of groups of potentially available potassium in the layer 0-30 cm are growing up under the influence of irrigation on 40,3% and 57,5% compared with bogarne conditions in the Chernozem ordinary. The rate of fertilizer (manure 200 t/ha + N200P200K60) is made under the basic treatment of the first rotation crop in the aftereffect for 11th year provides a positive balance of exchange potassium in the Chernozem ordinary even if the original content is reduced by 2,1 times more.

Keywords: Chernozem, irrigation, fertilizers, potassium.