在饱和持水量的条件下，草地雀麦具有加速土壤水分散失的作用。

When the soil moisture is saturated, Bromus riparius can accelerate the loss of soil moisture .

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草地雀麦刈割处理对地上、地下生物量的生长有一定的促进作用。

Slopes has significant effect on the up-ground and has nothing with on the underground biomass ;

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本文采用综合特征指标的选择方法，筛选出美国无芒雀麦等三个优良能源草种，并提出建立永续性多年生混播草地模式。

Selected the way of multiple character index, we selected Ameri- can Bromus inermis and other two fine energy-herbs and advanced the model of constructing endurable, perennial and mixed meadow.

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