为筛选适宜临夏地区种植的优质高产青贮玉米品种，促进旱作生态区青贮玉米产业发展，在临夏县川塬灌区覆膜栽培条件下，对引进的13个青贮玉米新品种进行试验观察。结果表明，生物产量高于对照品种豫玉22号的品种共8个，其中铁研53、京九青贮16、大京九26较高，分别为123 297.8、121 464.4、119 172.6 kg/hm2，较对照品种豫玉22号分别增产14.47%、12.77%、10.64%；屯玉168、陇青贮1号、瑞青贮616、金穗1915、大唐8号分别为118 714.3、117 339.2、114 130.7、110 005.5、108 638.8 kg/hm2，较对照品种豫玉22号分别增产10.21%、8.94%、5.96%、2.13%、0.86%。依据青贮玉米品质分级标准，佳玉1017达到一级；屯玉168、陇青贮1号、金穗1915、京科627、登海3721、瑞青贮616达到二级。综合产量和品质因素，屯玉168、陇青贮1号、金穗1915、京九青贮16、大京九26、瑞青贮616适宜在临夏地区推广种植，铁研53作为高生物产量、佳玉1017作为高饲用品质推荐品种。

To select suitable silage maize varieties with premium quality and high yield potential for Linxia area and to promote the development of silage maize industry in dryland ecological region, 13 introduced silage maize varieties were tested and observed under the conditions of film mulching in the plain and high land area of Linxia County where irrigation was available. Results showed that biomass yields of 8 varieties were higher than that of the control Yuyu 22, among which biomass yields of Tieyan 53, Jingjiu silage 16 and Dajingjiu(123 297.8, 121 464.4 and 119 172.6 kg/ha, respectively) were superior which were 14.47%, 12.77% and 10.64% higher compared with that of the control Yuyu 22, respectively. Biomass yields of Tunyu168, Longsilage 1, Ruisilage 616, Jinsui 1915 and Datang 8 were 118 714.3, 117 339.2, 114 130.7, 110 005.5 and 108 638.8 kg/ha, respectively, which were 10.21%, 8.94%, 5.96%, 2.13% and 0.86%higher compared with that of the control, respectively. According to the silage maize quality classification standard, Jiayu 1017 reached the first-class standard, Tunyu 168, Long silage 1, Jinsui 1915, Jingke 627, Denghai 3721 and Rui silage 616 met the second-class standard. Taken factors of yield and quality into consideration, silage maize varieties suitable for planting and promotion in Linxia area were Tunyu 168, Long silage 1, Jinsui 1915, Jingjiu silage 16, Dajingjiu 26 and Rui silage 616, followed by Tieyan 53 (high biomass variety) and Jiayu 1017 (high nutritive quality variety).

S513

甘肃省现代农业科技支撑体系区域创新中心重点科技项目(2020GAAS05-2)。