Abstract: In order to screen out suitable maize (Zea mays) varieties for silage and grain production in northern Henan province,we selected 21 maize varieties to assess their total biomass yield,grain yield,stay-green characteristics,lodging rate,aerial root characteristics and nutrient quality. The result showed that:(1) The highest total biomass yield was Yudan 58 (24.98 t·ha^-1),followed by Muqing 188 and Dajingjiu 26. The highest grain yield was Muqing 188 and Dafeng 30. (2) Varieties with better stay-green characteristics demonstrated higher total biomass yields,extended harvesting period and lower grain proportion. (3) Starch content was negatively correlated with total biomass yield,crude protein,neutral detergent fiber and acid detergent fiber (P<0.05). (4) Varieties with taller ear height and thinner stem experienced severe lodging. The lodging rate was positively correlated with ear height (P<0.05),and displayed no significant correlated with stem diameter,number of soil rooting and aerial rooting. Based on comprehensive evaluation of total biomass yield,grain yield,nutrient quality,stay-green characteristics and lodging resistance indicators,Muqing 188,Dafeng 30 and Dajingjiu 166 demonstrated superior overall performance,and could be recommended for planting in northern Henan Province.

Key words: Silage maize, Varieties, Production performance, Nutrient quality, Comprehensive evaluation

摘要： 为筛选出适合豫北地区种植，适宜全株青贮也可用于籽粒生产的玉米(Zea mays)品种，本研究选择21个玉米品种，测定了全株生物产量、籽粒产量、持绿性、倒伏率、气生根特性和饲草品质等指标。结果表明：(1)全株干物质产量最高的品种为‘渝单58’(24.98 t·hm^-2)，其次为‘牧青188’‘大京九26’等；籽粒产量较高的品种为‘牧青188’‘大丰30’等。(2)持绿性较好的品种全株干物质产量较高，适收期较长，籽粒占比低。(3)淀粉含量与全株产量、粗蛋白、中性洗涤纤维、酸性洗涤纤维显著负相关(P<0.05)。(4)穗位较高以及茎秆较细的品种出现了重度倒伏现象，穗位高与倒伏率显著正相关性(P<0.05)，地下根数、气生根数、茎粗与倒伏率无显著相关性。结合全株干物质产量、籽粒产量、营养品质得分、持绿性、抗倒伏性指标对各品种进行综合评价，‘牧青188’‘大丰30’‘大京九166’综合表现较好，适合在豫北地区推广种植。

关键词: 青贮玉米, 品种, 生产性能, 营养品质, 综合评价