摘要
Abstract
The purpose of this study was to screen out silage maize varieties suitable for planting in Shuangcheng area.The experiment compared investigating the growth period,agronomic traits,yield,and nutritional quality of 17 silage maize varieties,and their comprehensive performance data were quantitatively evaluated using grey correlation analysis.The results showed that among the 17 maize varieties,the silage Aobang m99 had the best plant height and stem diameter,which were 354.9 cm and 2.58 cm,respectively.The green leaf ratio of Tianyu 108 was 88.57％,which was not significantly different from that of Jingang 29,Daao 7000,m9898,Xianyu 1483,Tiannongjiu,Kenwo 9905,Jinlingqingzhu 418,Xiangyu 998,and Tieyuan 24(P＞0.05),but significantly higher than that of the other seven varieties(P＜0.05).The silage yield was more than 60 t/hm2 and the dry matter yield more than 20 t/hm2 were Tieyuan 24,Jinboshi 825,Xianyu 1483,Tiannongjiu,m9898,and Jinggang 29.Except for silage Jinguyu 2124 and silage Aobang m99,the starch content of the other 15 varieties was greater than 28.00％DM,which reached the national first-class standard,and the difference between the varieties was not significant(P＞0.05).The neutral detergent fiber content of Jinboshi 825 was the lowest,which was 44.27％DM.The lowest acid detergent fiber was Tiannongjiu(24.07％DM).The variety with the highest whole plant crude protein content was Jinguyu silage 2124(9.32％DM).Jinboshi 825 and Tieyuan 24 had high comprehensive scores in grey correlation analysis.The study indicates that Jinboshi 825 and Tieyuan 24 have good comprehensive production performance and are suitable for promoting and planting as high-quality silage maize varieties in the Shuangcheng area.关键词
青贮玉米/品种筛选/生产性能/营养价值/灰色关联度分析/双城地区Key words
silage maize/variety selection/production performance/nutritional value/grey correlation analysis/Shuangcheng area分类
农业科技
