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- natural betula platyphylla forest 天然白桦林
- secondary Betula platyphylla forest 次生白桦林
- Betula platyphylla forest 白桦林
- Through the observation,we selected the optimum management density of Larix gmelini and Betula platyphylla mixed forest , and analyzed the research result. 通过观测研究,选出落叶松白桦混交林的最佳经营密度,并对研究结果进行了分析评价。
- Studies on the Chemical Constituents of the Leaves of Betula platyphylla Suk. 白桦叶化学成分的研究
- The microwave-assisted extraction(MAE) of betulin from Betula platyphylla Suk. 利用均匀设计法优化了微波辅助提取白桦树皮中桦木醇的工艺。
- Six ectomycorrhizal fungi of Betula platyphylla were screened from the eleven fungi which were collected under the mixed forest of Betula platyphylla Suk. . They are Agaricus sihaticus Schaeff. 通过室内菌根合成实验，从白桦混交林下采集的11种大型真菌中，筛选出6种白桦(Betula platyphylla Suk.;)
- Abstract： In this paper, the feature of birch (Betula platyphylla) secondary forest was analysed including succession analysis, died-tree analysis and management analysis by measuring plots. 通过白桦林样地调查，对白桦林进行了径级分析、死亡木分析和经营分析。
- The fluctuant and conventional drying technologies for22 mm-thick Birch( Betula platyphylla) were tested and compared. 进行了桦木波动干燥工艺和常规干燥工艺的对比试验。
- Current status of the study on seeds resource and propagation of Betula platyphylla Suk. 白桦种源及繁殖的研究现状
- Objective: To establish two-dimensional electrophoresis(2-DE) patterns of flower-bud for Betula platyphylla. 目的:初步建立白桦花芽蛋白质组研究的双向电泳(2-DE)技术,以提高其分辨率及重复性。
- The fluctuant and conventional drying technologies for 22 mm-thick Birch (Betula platyphylla) were tested and compared. 进行了桦木波动干燥工艺和常规干燥工艺的对比试验。
- Niche relationships between Betula platyphylla and main understory herbages in forest-steppe ecotone of Daxingan-ling Mountains. 大兴安岭森林草原过渡带白桦及主要草本植物生态位关系的研究。
- Stem sap flow density characteristics of ailing Betula platyphylla in 2001 was concerned with physiological control of transpiration. 叶感病白桦树干液流具有以上特点，是因为具有较强的蒸腾生理调控力，以适应叶部病害而求得生存。
- Thermal dissipation method was applied to study the stem sap flow of Betula platyphylla for two consecutive growing seasons. 摘要应用热扩散法，对白桦树干液流进行连续两个生长旺期测定。
- BACKGROUND &AIM: Betulin is an important triterpene. We investigated the antitumor activity of betulin,extracted from the bark of silver birch(Betula platyphylla Suk). 背景与目的白桦酯醇是一种重要的三萜类生物活性分子,本文从白桦树皮中提取获得白桦酯醇纯品,然后研究该生物活性分子抑制食管癌细胞的活性。
- Abstract BACKGROUND & AIM: Betulin is an important triterpene.We investigated the antitumor activity of betulin, extracted from the bark of silver birch (Betula platyphylla Suk). 摘要 背景与目的: 白桦酯醇是一种重要的三萜类生物活性分子，本文从白桦树皮中提取获得白桦酯醇纯品，然后研究该生物活性分子抑制食管癌细胞的活性。
- Betula platyphylla Suk. 白桦
- Betula Platyphylla Japonica Bark Extract 日本白桦树皮提取物
- transgenic birch (Betula platyphylla) 转基因白桦
