NFLUENCE of Se-FERTILIZERS AND LEVELS acidity of luvisol light loamy soil ON PRODUCTIVITY of LONG-TERM CEREAL GRASS And ACCUMULATION In THEM Se

Abstract

Results of field experiences on influence of Se-fertilizers on efficiency of grass and accumulation Se in them Se is given. In the first year of use of grass the authentic increase of a crop of hay of grass from entering of Se in soil are presented. In the first year of entering Se in a doze 100 г/га the contents it in hay Dactylis glomerata L. has increased in 4,7-5,5 times, in hay Festuca pratensis Huds. - in 4,6-8,2 times, in hay Phleum pretense L. - in 5,8-6,5 times and has made 117,5-209,8 mkg/kg. At a doze of entering Se 300 г/га the contents of Se in plants of Dactylis glomerata L., Festuca pratensis Huds. And Phleum pretense L. has increased in retensson with background in 12,9; 19,8; 12,7 times (рН 6,0) and in 10,8; 13,4 and 10,7 times (рН 6,7) also have made 340,2-456,1 mkg/kg. At unitary entering into ground Na₂SeO₃ in a doze 300 г Se/га before sowing of plants on luvisol light loamy soil to ground the contents Se in hay Dactylis glomerata L., Festuca pratensis Huds., and Phleum retense L. at a level optimum for forages is provided during the two-years vegetation.