That means the birch from high longitude and latitude areas will have lower content of the ash, extraction and lignin, higher content of the holocellulose and pentosan in the wood.

 
  • 这表明,选择较高经纬度地区的白桦,可以降低灰分、抽出物、木素含量,提高综纤维素和聚戊糖含量。
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