不同青贮玉米品种鉴选及灰色关联度分析

Identification and Grey Correlation Analysis of Different Silage Corn Varieties

为筛选适宜晋北高寒半干旱地区种植的青贮玉米品种,选用6个青贮玉米品种(先玉508、大京九23、强盛青贮30、龙生19号、雅玉8号和永玉3号)进行适应性研究,对各品种的农艺性状、生物学产量及青贮品质等进行测定和相关分析,并利用灰色关联度分析法进行综合评价。结果表明,在6个青贮玉米品种中,大京九23、永玉3号和雅玉8号的生物学产量排前3位,分别为77151.27、74978.73、69821.23 kg/hm^(2);不同品种之间的生物学产量、干物质含量差异显著,粗蛋白、淀粉、酸性洗涤纤维、中性洗涤纤维、木质素、总可消化养分含量差异显著。利用灰色关联度分析法综合评价6个青贮玉米品种的性状指标,结果表明,龙生19号、先玉508综合表现较优,适宜作为全株青贮玉米品种在晋北寒地半干旱区推广种植。

In order to select silage corn varieties suitable for planting in the alpine and semi-arid areas of northern Shanxi Province,six silage corn varieties(Xianyu 508,Dajingjiu 23,Qiangsheng silage 30,Longsheng 19,Yayu 8 and Yongyu 3)were selected for adaptability study.The agronomic traits,biological yield and silage quality of each test variety were measured and analyzed for correlation with each other,and the grey relational analysis method was used for comprehensive evaluation.The results showed that among the six silage corn varieties,the biological yield of Dajingjiu 23,Yongyu No.3 and Yayu No.8 ranked the top 3,which were 77151.27,74978.73,69821.23 kg/ha,respectively.There were significant differences in biological yield and dry matter content among different varieties.The contents of crude protein,starch,acid fiber,neutral fiber,lignin,and total digestible nutrient were significantly different.The grey correlation analysis method was used to comprehensively analyze the trait indicators of the six silage maize varieties.The results showed that Longsheng 19 and Xianyu 508 had better comprehensive performance and were suitable to be used as whole silage maize varieties in the cold semi-arid area of North Shanxi Province.