Selection of Silage Maize Varieties and Comprehensive Evaluation of Their Nutritional Value in Central and Southern Henan
In order to select silage maize varieties with high yield,good quality and multi-resistance in south-ern summer maize area of central Henan,20 maize varieties were used as experimental materials.Thirteen parame-ters,including growth period and hay yield were analyzed.The results showed that,six varieties,including Jingkeq-ingzhu516 and Jingke 968,exhibited high hay yield and strong resistance to adverse conditions.Cluster analysis of hay yield,agronomic traits,and nutritional indexes categorized the twenty maize varieties into three groups.The first group,which included eight varieties such as Jingkeqingzhu938,had the highest average hay yield,strong stress re-sistance,the highest neutral and acid detergent fiber content,and the lowest feed value.The second group was Jingke522 with medium agronomic traits.The third group was MC703 etc eleven maize varieties which with high av-erage hay yield and high average crude protein content.From the comprehensive analysis of hay yield,MC703,Zhengdan919,Jingkeqingzhu576,Jingkeqingzhu516 and Jingke968 showed better performance and were suitable to be used as silage maize in central and southern Henan.
Silage maizeCentral and southern HenanFood and feed generalYieldQuality
NETL
NSTL
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