青海旱地3个青贮玉米品种的生产性能及品质评价

摘要

In order to select the suitable silage Zea mays varieties for popularisation in the dry land of Qinghai,we introduced three varieties and conducted comparative experiments at an altitude of 2 040 m in the dry land of Qinghai.The results showed that the comprehensive characters of Yuyu 22 were outstanding,with a plant height of 314.80 cm,single plant fresh weight of 1 148.67 g,single plant dry weight of 257.96 g,green leaf number of 13.60,and fresh yield of 121 066.95 kg · ha-1.The fresh yield increased by 44.70％ than that of Jinsui 3,and by 6.74％ than that of Jinkai 3,and the hay yield increased by 11.42％ and 11.09％ than that of Jinsui 3 and Jinkai 3,respectively.The crude protein content of hay was 6.94％,the crude fat content was 13.87 g · kg-1,and the calcium content was 3.82 g · kg-1.Yuyu 22 can promote cultivation at the dry land of Qinghai.%为了筛选出适宜青海旱地推广种植的青贮玉米(Zea mays)品种,引种了3个品种在海拔2 040 m的青海旱地进行比较试验.结果表明,豫玉22号综合性状表现突出,株高314.80 cm,单株鲜重1 148.67 g,单株干重257.96 g,单株绿叶数13.60片,鲜草产量121 066.95 kg·hm-2,较金穗3号和金凯3号分别增产44.70％和6.74％,干草产量分别增产11.42％和11.09％.干草中粗蛋白含量达6.94％,粗脂肪含量达13.87 g·kg-1,钙含量达3.82 g·kg-1.以上结果说明,豫玉22号可在青海旱地推广种植.