Prickly ash in terrace edge root system becomes stout obviously with age of trees and total amount of root system increases.

地埂花椒林根系随树龄的增加，根系增粗明显，根系总量增加。

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Prickly ash in terrace edge root system becomes stout obviously with age of trees and total amount of root system increases.

地埂花椒林根系随树龄的增加，根系增粗明显，根系总量增加。

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