长芒草

长芒草草地在封育条件下群落结构和生物量变化的研究

Dynamics of the community structure and biomass of Stipa bungeana grassland under closed conditions

自然条件下长芒草坡面根系主要分布在0-50cm土层，并且随深度的增加而减少，可以用指数函数来模拟。

The Stipa bungeana root was mainly distributed in the depth of 0-50 cm , and the root content decreased with soil depth . The trend can be simulated well by exponential model .

干旱胁迫、光照及其互作显著影响长芒草种子的发芽。

Water stress , light , and their interactions significantly influenced seed germination .

多样性指数显示草甸草原>长芒草草原>次生杂类草草原，轻牧草地>禁牧草地>过牧草地的趋势。

The Shannon-wiener index and Simpson index showed a trend of ruderal meadow steppe > Stepa bungeana steppe > secondary ruderal steppe , and moderate grazing grassland > forbid grazing grassland > over grazing grassland .

利用SDS-PAGE分析、PCR扩增和序列测定与分析研究了长发带芒草（Taeniatherumcrinitum）的高分子量谷蛋白亚基及其基因。

HMW glutenin subunits and genes in Ta . crinitum were investigated by using SDS-PAGE and PCR technology .