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【目的】以自育及引进的单秆和分蘖两种类型16个青贮玉米品种(组合)为材料,分析不同类型青贮玉米品种的产量差异。【方法】采取随机区组设计,利用DPS统计分析软件,对不同类型青贮玉米品种产量进行方差分析和差异显著性分析。【结果】不同类型青贮玉米品种之间产量差异达极显著水平,青贮玉米产量单秆型显著高于分蘖型。增产潜力较大的品种为RD2、CD15和XQ5,平均产量为5 541.02、5 472.13和5 454.35 kg/667 m2,分别比对照新饲玉1号(5 143.22 kg/667 m2)增产7.73%,6.39%和6.05%。【结论】在选育高产青贮玉米新品种时,应重点选择直立性好的单秆型青贮玉米,不仅可获得较高的生物产量,而且有利于机械化收获。
【Objective】 The objective of this study was to analyze the yield differences of different types of silage maize using 16 silage maize varieties (combinations) of self-raising and introduced single-stalk and tillering. 【Method】 A randomized block design was adopted and the variance analysis and the significant difference analysis of yield of different types of silage maize varieties were conducted by using DPS statistical analysis software. 【Result】 The yield difference between different types of silage maize varieties reached extremely significant level. The single silage yield of silage maize was significantly higher than that of tillering type. The varieties with higher yield potential were RD2, CD15 and XQ5 with the average yield of 5441.02,5472.13 and 5454.35 kg / 667 m2, respectively, which increased by 7.73% and 6.39 respectively compared with the control Xinjyu 1 (5 143.22 kg / 667 m2) % And 6.05%. 【Conclusion】 In the selection of high-yielding silage maize varieties, the single-silage corn with good uprightness should be selected, which not only can obtain higher biomass but also benefit mechanized harvesting.