Fig. 4 Flow chart of pentosan analysis – Orcinol spectrophotometric method.

分析法流程圖—間苯二甲酚光度法。

Fig. 4 Flow chart of pentosan analysis - Orcinol spectrophotometric method.

分析法流程图—间苯二甲酚光度法.

In different harvesting seasons, the lignin, holocellulose and pentosan contents in bamboos didn''t change too much.

至于同主要组成分的质素、全纤维素、等成分，则没有季节变。

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、素含量，提高综纤维素和糖含量。

Fig. 4 Flow chart of pentosan analysis – Orcinol spectrophotometric method.

醣分析法流程圖—間苯二甲酚光法。

Fig. 4 Flow chart of pentosan analysis - Orcinol spectrophotometric method.

醣分析法流程图—间苯二甲酚光法.

In different harvesting seasons, the lignin, holocellulose and pentosan contents in bamboos didn''t change too much.

至于同为化学主要组成分的质素、全纤维素、醣等成分，则没有季节变化。

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，选择较高经区的白桦，可以降低灰分、抽出物、素含量，提高综纤维素和糖含量。

Fig. 4 Flow chart of pentosan analysis – Orcinol spectrophotometric method.

聚戊醣分析法流程圖—間甲酚光度法。

Fig. 4 Flow chart of pentosan analysis - Orcinol spectrophotometric method.

聚戊醣分析法流程图—甲酚光度法.

In different harvesting seasons, the lignin, holocellulose and pentosan contents in bamboos didn''t change too much.

至于同为学主要组成分的质素、全纤维素、聚戊醣等成分，则没有季节。

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.

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

Fig. 4 Flow chart of pentosan analysis – Orcinol spectrophotometric method.

醣分析法流程圖—間苯二甲酚光法。

Fig. 4 Flow chart of pentosan analysis - Orcinol spectrophotometric method.

醣分析法流程图—间苯二甲酚光法.

In different harvesting seasons, the lignin, holocellulose and pentosan contents in bamboos didn''t change too much.

至于同为化学主要组成分的质素、全纤维素、醣等成分，则没有季节变化。

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，选择较高经区的白桦，可以降低灰分、抽出物、素含量，提高综纤维素和糖含量。

Fig. 4 Flow chart of pentosan analysis – Orcinol spectrophotometric method.

聚戊醣分析法流程圖—間酚光度法。

Fig. 4 Flow chart of pentosan analysis - Orcinol spectrophotometric method.

聚戊醣分析法流程图—间酚光度法.

In different harvesting seasons, the lignin, holocellulose and pentosan contents in bamboos didn''t change too much.

至于同为化学主要组成分的质素、全纤维素、聚戊醣等成分，则没有季节变化。

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，降低灰分、抽出物、素含量，提高综纤维素和聚戊糖含量。

Fig. 4 Flow chart of pentosan analysis – Orcinol spectrophotometric method.

聚戊法流程圖—間苯二甲酚光度法。

Fig. 4 Flow chart of pentosan analysis - Orcinol spectrophotometric method.

聚戊法流程图—间苯二甲酚光度法.

In different harvesting seasons, the lignin, holocellulose and pentosan contents in bamboos didn''t change too much.

至于同为化学主要组成的质素、全纤维素、聚戊等成，则没有季节变化。

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，选择纬度地区的白桦，可以降低灰、抽出物、素含量，提综纤维素和聚戊糖含量。

Fig. 4 Flow chart of pentosan analysis – Orcinol spectrophotometric method.

聚戊醣分析法流程—二甲酚光度法。

Fig. 4 Flow chart of pentosan analysis - Orcinol spectrophotometric method.

聚戊醣分析法流程图—间二甲酚光度法.

In different harvesting seasons, the lignin, holocellulose and pentosan contents in bamboos didn''t change too much.

至于同为化学主要组成分的质素、全纤维素、聚戊醣等成分，则没有季节变化。

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，可灰分、抽出物、素含量，提高综纤维素和聚戊糖含量。

Fig. 4 Flow chart of pentosan analysis – Orcinol spectrophotometric method.

聚戊醣分析法流—苯二甲酚光度法。

Fig. 4 Flow chart of pentosan analysis - Orcinol spectrophotometric method.

聚戊醣分析法流图—间苯二甲酚光度法.

In different harvesting seasons, the lignin, holocellulose and pentosan contents in bamboos didn''t change too much.

至于同为化学主要组成分的质素、全纤维素、聚戊醣等成分，则没有季节变化。

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，可以分、抽出物、素含量，提高综纤维素和聚戊糖含量。

Fig. 4 Flow chart of pentosan analysis – Orcinol spectrophotometric method.

聚戊醣分析法流程圖—間苯二甲法。

Fig. 4 Flow chart of pentosan analysis - Orcinol spectrophotometric method.

聚戊醣分析法流程图—间苯二甲法.

In different harvesting seasons, the lignin, holocellulose and pentosan contents in bamboos didn''t change too much.

至于同为化学主要组成分的质素、全纤维素、聚戊醣等成分，则有节变化。

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