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杂交狼尾草是以二倍体美洲狼尾草和四倍体象草交配产生的三倍体杂种,其后代不结实,生产上通常用杂交一代种子繁殖或无性繁殖。该品种是一种热带型牧草,在长江中下游种植,一般产鲜草15万kg/hm~2,且鲜草粗蛋白质含量高,氨基酸含量比较平衡,是喂养禽畜和鱼类的优质饲料。近年来种植面积发展很快。 1 特征特性杂交狼尾草根深密集,须根发达,根系分布主要在0～20cm土层内。茎圆形,丛生,粗硬直立,一般株高3.5m左右,单株分蘖级20个。多次刈割后,分蘖可成倍增加。叶长条形,互生,叶片长60～80cm,宽
Hybrid Pennisetum is a diploid diploid American Pennisetum and tetraploid grass produced triad hybrids, their offspring is not strong, the production is usually the first generation of hybrid seed breeding or asexual reproduction. The species is a tropical forage planted in the middle and lower reaches of the Yangtze River, generally producing fresh grass 150,000 kg / hm ~ 2, and fresh grass crude protein content, amino acid content is relatively balanced, is to feed poultry and fish quality feed . In recent years, acreage has developed rapidly. 1 Characteristics of hybrid hybrid Pennisetum root deep, fibrous developed, root distribution mainly in 0 ~ 20cm soil layer. Stems round, tufted, coarse and erect, the general plant height of about 3.5m, tillering level of 20 plants. After multiple mowing, tillers can be multiplied. Leaves long strip, alternate, leaves 60 ~ 80cm long, wide