Abstract: In this study, the yield, agronomic and nutritional quality traits of ten corn (Zea mays L.) varieties were evaluated. Results showed that the biomass yields of silage were the highest for accession CK732, Jingdan 28 and Yayu 26. The nutritional quality, especially the crude fiber content of silaged Jingdan 28 was the best, while no significant differences were found among other varieties. In general, agronomic traits were correlated with the biomass yield of whole plant and silage quality. There were positive correlations between biomass yield and plant height, leaf length and ear length. The neutral detergent fiber (NDF) and acid detergent fiber (ADF) contents of the silage were in general significantly positive correlated with green leaf number, leaf width and stalk diameter, while negatively correlated with grain yield, leaf length and ear diameter. CK732, Jingdan 28 and Yayu 26 had overall superior agronomic and silage quality traits and therefore were suitable for silage corn production in the central part of China.

Key words: Silage Corn, Varieties, Agronomic traits, Quality

摘要： 为选出适宜中原地区种植的全株青贮玉米(Zea mays L.)品种,对10个玉米品种进行品比试验,探讨其各农艺性状与全株产量、品质的相关关系。结果表明:在生物学产量方面,以京单28、雅玉青贮26及CK732表现好;在品质方面,从中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)的含量综合考虑,京单28表现最好,而其他品种间无显著差异。产量、品质与农艺性状有一定程度的相关性:产量与株高、叶长、穗长成正相关;而NDF和ADF含量与绿叶数、叶宽、茎粗成正相关,与籽粒产量、叶长、穗粗成负相关,其中,NDF和ADF含量与籽粒产量分别成极显著和显著负相关。从产量、营养品质和农艺性状方面综合考虑,CK732、京单28和雅玉青贮26表现优良,适宜作为全株青贮玉米品种在中原地区推广种植。

关键词: 青贮玉米, 品种, 农艺性状, 品质