这是一种每年发芽开花的多年生根茎。

This is a perennating rhizome from which flowering shoots arise annually.

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多年生根茎在沙基质中形成多层密集网络结构；

The perennial rhizomes formed closely crowed belowground networks.

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二年生的枝条的成活率最高，尤其以二年生的生根粉的效果最好，为49.1%，比一年生和多年生的要高出15%左右。

The survival rate of the biennial branch is the highest, especially the biennial taking root powder (49.1%), it is about 15% higher than the annual and perennial one.

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