【摘要】 对羊草种群能量生殖分配规律研究表明 ,在羊草种群中 ,各构件热值的大小顺序为穗 >营养枝叶鞘 >生殖枝叶鞘 >营养枝叶 >营养枝茎 >生殖枝茎 >生殖枝叶 >凋落物 ;营养生长和生殖生长的能量分配比例的大小顺序为营养枝 >根茎 >凋落物 >生殖枝 ;各构件能量分配比例的季节动态也有差异 .在羊草种群的生殖枝构件中 ,茎和叶鞘的分配比例较大 ,而穗和叶的能量分配比例较小 .更多还原

【Abstract】 Studies on energy allocation to growth and reproduction in Leymus chinensis population show that the average calorific value of modulus was decreased in the order of ear>leaf sheath of vegetative shoot>leaf sheath of sexual shoot>leaf of vegetative shoot>stem of vegetative shoot>stem of sexual shoot>leaf of sexual shoot>litter,and the energy allocation rate of vegetative and reproductive growth was in the order of vegetative shoot>rhizome>litter>sexual shoot.The dynamics of energy allocation rate of modulus was different with seasons.Among all reproductive stem modulus,the rate of energy allocation to stem and leaf sheath of sexual shoot was higher than that to ear and leaves.更多还原