优质青贮玉米品种龙青1号的选育及栽培要点

Breeding of Silage Maize Variety Longqing No.1 and Its Main Points of Cultivation

龙青1号青贮玉米品种是黑龙江省农科院玉米研究中心以自育系H220为母本,引入自交系G219为父本杂交育成的单交种。该品种从出苗到适宜采收期(蜡熟期)需有效积温2550℃.d左右,在哈尔滨市生育日数为115～120d。2000～2003年在各级试验中表现为优质、高产、稳产、抗病、抗逆性强等特点。龙青1号青贮玉米品种适宜在黑龙江省第一积温带下限和第二积温带种植,密度为60000株/hm2左右。

Silage maize variety Longqing No.1 is single cross variety bred by maize research center of heilongjiang academy of agricultural sciences, The female parent H220 is ourselves breeding inbred line, the male parent G219 is introduced inbred line. This variety requires effective accumulated temperature about 2 550℃ from emergence of seeding to stage of wax ripeness, it＇s growth period is 115 - 120 d in the Harbin city. This variety expressed good quality, high yield, stable yield and good resistance in the different experiment. Longqing No. 1 is suitable for plant from first zone of accumulated temperature to second zone of accumulated temperature. Planting density about 60 000 plants/ha is suitable for this variety.