8种狼尾草属植物的生长性状比较分析

为了研究哪种狼尾草属植物最适合做能源植物,通过采用主成分和聚类分析法的方法,研究8种狼尾草属植物的生长速度、生长性状和不同刈割期生长能力.结果表明:‘MT-1象草’新品系的生长速度慢些,但生长高、分蘖多、综合生长性状表现最优秀；‘桂牧1号象草’的综合表现仅次于‘MT-1象草’,新品系‘摩特矮象草’的综合表现是最差的.试验研究最终显示,‘MT-1象草’新品系是最适合做能源植物,‘桂牧1号象草’可以在必要情况下作为‘MT-1象草’的替代品种.

The Comparative Analysis on Growth Characteristics of Eight Kinds of Pennisetum alopecuroides

In order to research which kind of Pennisetum alopecuroides is suit to be energy plant, the methods of principal component and cluster analysis were applied to research the growth speed, growth characteristics and growth ability at different period of eight Pennisetum alopecuroides in this paper. The results showed that, the new varieties P. purpureum MT-1 was the best breed on growth ability and comprehensive growth characteristics though not very well on growth speed, (P. americanum×P. purpureum)×P. purpureum cv. ‘Guimu NO.1’ was the second excellent breed and Pennisetum purpureum cv. Mott was the worst breed among eight experimental varieties according to the comprehensive performance. By the experiment, we had ultimately drew the conclusion that P. purpureum MT-1 was the best fit energy plant among all experimental varieties, and sometimes (P. americanum×P. purpureum)×P. purpureum cv. ‘Guimu NO.1’ could be as the substitute to P. purpureum MT-1.