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Position: Home > Articles > Regularity of Juice Flowed from Asian White Birch and Its Composition Analysis Journal of Northwest Forestry University 1992 (1) 15-25

桦树汁液的外溢规律及其成分分析

作  者:
王金生;朱兴武;张鸿昌;李永良;蔡文成
单  位:
青海大通县东峡林场;青海省农林科学院林研所
关键词:
白桦;产汁量;周期
摘  要:
在青海省大通东峡林区的白桦林中,用钻孔法取汁,4月中旬开始溢出,5月中下旬终止,产汁量周期变化过程用修正的Logistic曲线方程模拟,效果理想(R=0.986)。一天中白天产汁量占60%~62%,夜里不超过40%,日产汁高峰出现在12:00~16:00时区。产汁量与树木胸径大小没有直接关系,采汁方向不影响采汁量,桦汁中含11种氨基酸,19种微量元素,还有糖类和少量维生素。
译  名:
Regularity of Juice Flowed from Asian White Birch and Its Composition Analysis
作  者:
Wang Jinsheng Zhu Xingwu Zhang Hongchang Li Yongliang (Institute of Forestry, Qinghai Province) Cai Wencheng(Dongxia Forest Farm, Datong County, Qinghai Province, Xining)
关键词:
Asian white birch(Betula platyphylla); juice yield; cycle
摘  要:
Describes juice flowed from Asian white birch (Betula p forest by drilling holes on tree trunks. The juice flowed began from mid-April and last to late May (about 35 days). Change of production cycle was simulated with modified Logistic curve and satisfactory result was obtained (R= 0.986). The juice yield was 60%-62% on daytime and < 40% in night. The highest yield appeared at noon to 16.00 p. m. everyday. No relation was found between yield and breast-height diameter or direction of hole drilled. The juice flowed contained 11 amino acids, 10 micro-elements, carbohydrates and a few vitamins.

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