宁夏彭阳地区青贮玉米品种生产性能及营养价值研究

Study on Production Performance and Nutritional Value of Silage Maize Varieties in Pengyang Area of Ningxia

为了筛选出适合宁夏彭阳地区种植的青贮玉米品种,选择9个青贮玉米品种进行栽培比较试验,对各品种的生物产量及相关的农艺性状和营养品质进行研究。结果表明,9个青贮玉米品种株高都在300 cm以上,中玉335最大,为350.96 cm;叶茎比大部分都在1以上,铁研53最大,为1.34;生物产量排序前三的分别为大京九23、中玉335、种星618,大京九23最高,为92854.50 kg/hm^2,铁研53最低,为66289.05 kg/hm^2;大京九23干物质含量最高,为97.73%;粗蛋白含量在6%以上的有种星618,含量为6.27%;相对饲喂价值在70以上的有种星618、铁研53、强盛青贮30,其中,种星618最大,为87.93。利用灰色关联度分析法对9个青贮玉米品种的12个指标综合评比,加权关联度排序前三的品种分别为种星618、大京九26、强盛青贮30。

In order to screen out silage corn varieties suitable for planting in Pengyang of Ningxia,nine silage corn varieties were selected for comparative cultivation experiments,the biological yield and related agronomic traits and nutritional quality of each variety were studied.The results showed that the nine silage corn varieties had plant heights above 300 cm,and Zhongyu 335 was the largest at 350.96 cm.Most of the leaf-stem ratios were above 1,and Tieyan 53 was the largest at 1.34.The top three in terms of biological yield were Dajingjiu 23,Zhongyu 335 and Zhongxing 618,Dajingjiu 26 had the highest at 92854.50 kg/hm^2,and Tieyan 53 had the lowest at 66289.05 kg/hm^2;Dajingjiu 23 had the highest dry matter content of 97.73%;Zhongxing 618 with a crude protein content of more than 6% had a content of 6.27%;the relative feeding value was more than 70 with Zhongxing 618,Tieyan 53 and Qiangsheng silage 30,of which Zhongxing 618 was the largest with 87.93.The grey correlation analysis was used to comprehensively evaluate 12 indicators of 9 silage corn varieties.The top three varieties ranked by weighted correlation were Zhongxing 618,Dajingjiu 26 and Qiangsheng silage 30.