Abstract: To screen out silage maize varieties suitable for planting in the Guyuan area of Ningxia, sixteen silage maize varieties were selected for comparative cultivation experiments. The results showed that the plant height of the ‘Beinongqingzhu 208’ reached 328.80 cm, which was significantly higher than other tested varieties except ‘Yuqingzhu 23’ (P<0.05). The hay yields of ‘Dajingjiu 26’ and ‘Keyu 188’ were 35.76 t·hm^-2 and 35.27 t·hm^-2 respectively, which were significantly higher than other tested varieties (P<0.05). The contents of crude protein, ether extract, crude fiber, crude ash, starch, nitrogen-free extract, neutral detergent fiber and acid detergent fiber were 6.20%~9.19%, 2.11%~4.08%, 20.90%~35.54%, 5.78%~8.63%, 16.10%~27.44%, 44.69%~59.71%, 36.00%~59.27%, and 21.86%~32.90% respectively, and the range of relative feed value was 96.52~158.68. According to the comprehensive evaluation of yield, quality and energy output, ‘Dajingjiu 26’, ‘SN211’ and ‘Mengqingzhu 1812’ performed best and were suitable for popularization and application in the Guyuan area.

Key words: Guyuan area, Silage maize, Production performance, Nutritional quality

摘要： 为了筛选适宜固原地区种植的青贮玉米（Zea mays L.）品种，本研究对16个青贮玉米品种进行了生产性能和营养品质比较试验。结果表明：对照品种‘北农青贮208’的株高达到328.80 cm，显著高于除‘豫青贮23’之外的其他参试品种（P<0.05）；‘大京九26’和‘科玉188’的干草产量较高，分别达到35.76 t·hm^-2和35.27 t·hm^-2，显著高于其他参试品种（P<0.05）；参试品种的粗蛋白、粗脂肪、粗纤维、粗灰分、淀粉、无氮浸出物、中性洗涤纤维和酸性洗涤纤维含量分别介于6.20%~9.19%，2.11%~4.08%，20.90%~35.54%，5.78%~8.63%，16.10%~27.44%，44.69%~59.71%，36.00%~59.27%和21.86%~32.90%之间，相对饲喂价值的变化范围为96.52~158.68。从产量、品质和能量产出等方面综合评定，‘大京九26’、‘SN211’和‘蒙青贮1812’表现最好，适宜在固原地区推广应用。

关键词: 固原地区, 青贮玉米, 生产性能, 营养品质