perennial grasses

The number of germinable seeds per soil sample ranged from 45 to 305 with an average of 102. Seeds of perennial grasses, perennial forbs and annuals accounted for 46 57, 51 96 and 1 47 percent of the total seed bank, respectively.

每样中的可萌发种子量变化于45到305之间，平均102/样。多年生禾草、多年生杂类草及1年生植物的土壤中种子量分别占总可萌发种子库的46.57%、51.96%和1.57%。

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Study on responses of soil physical character to stocking rate of yaks on mixed sown pastures of perennial grasses in Yangtze and Yellow Rivers source region

江河源区披碱草和星星草混播草地土壤物理性状对牦牛放牧强度的响应

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The Effect of perennial and annual grasses mixture in plateau area

高原地区多年生与一年生禾本科牧草混播效果

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unlike corn, which must be replanted every year, perennial grasses such as switchgrass and miscanthus preserve and increase carbon stores in the soil.

不像一年生的玉米，多年生的草本植物如柳枝稷和细叶芒可以增加土壤中的碳储量。

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Sugar cane is a tropical perennial. It's one of the grasses.

甘蔗是一种热带多年生植物,它是一种禾本科植物.

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