青贮玉米为草食家畜最主要的饲草料来源之一，因其品种、株型及种植生态区域不同，适宜栽培密度也不同。为筛选出不同青贮玉米品种在武威地区的合理种植密度，对引进的青贮玉米品种雅玉26号、五谷8818进行了密度试验。结果表明，雅玉26号、五谷8818均在种植密度为9.0万株/hm2时植株田间长势整齐、抗倒伏，折合鲜生物、干生物产量均最高，分别为82 600.5、75 883.5 kg/hm2和30 060.0、28 369.5 kg/hm2。说明青贮玉米雅玉26号、五谷8818在武威地区最适宜的种植密度是9.0万株/hm2。

Silage corn is one of the main sources of forage for herbivorous livestocks. Due to the differences in varieties, plant types, and ecological regions of cultivation, the suitable planting density variesac cordingly. To screen out therational planting density of different silage corn varieties in the Wuwei, experiments were conducted on the introduced silage corn varieties Yayu 26 and Wugu 8818. The results showed that both Yayu 26 and Wugu 8818 had uniform field growth and lodging resistance at a planting density of 90 000 plants/ha, with the highest yields of fresh and hay biomass recorded, which were 82 600.5 and 75 883.5 kg/ha, and 30 060.0 and 28 369.5 kg/ha, respectively. The most suitable planting density for silage corn Yayu 26 and Wugu 8818 in the Wuwei is 90 000 plants/ha.

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