1. There is very close correlation between the stumpage volume percent of poplar timber assortment and the stumpages D.
杨树立木材种材积成数与胸高直径呈极紧密相关。
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2. It points out that the output value of silviculture of artificial timber stand should be divided into two parts, the output value of stumpage and the output value of cultivability.
3. It points out that the output value of silviculture of artificial timber stand should be divided into two parts, the output value of stumpage and the output value of cultivability.
