虎尾草

结果表明：1）在自由放牧干扰下，优势度最大的前五个种为虎尾草（27.8）、蒲公英（3.52）、狼毒（3.42）、野韭菜（3.03）、鹅绒委陵菜（2.67）；

The results were as follows : 1 ) under free grazing , the biggest advantage of the first five species were Chloris virgata ( 27.8 )? Taraxacum mongolicum ( 3.52 )? Stellera chamaejasme ( 3.42 )?

提取物对受体植物的幼苗鲜重均有不同程度的影响，虎尾草、匍匐翦股颖、巴哈雀稗、反枝苋和多变小冠花幼苗鲜重明显降低，与对照差异达显著水平（P<0.05）。

Alfalfa leaf extract effeced the fresh weight of showy chloris , stolon-bearing bent grass , bahia grass , redroot amaranth and crown vetch , they were lighter than control ( P < 0.05 ) .

受其影响，羊草和虎尾草的高度明显较大，地上生物量和地下生物量明显增加。

Under the influence , the height of Leymus chinensis and Swartz became higher clearly , and so was the aboveground biomass and underground biomass .

结论：通过对虎尾轮根化学成分分析，将为进一步确定其活性部位，开发利用虎尾轮草提供实验依据。

Conclusion : This study will contribute to clarification of the bioactive parts and the development of crinite uraria root .