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- Betula maximowicziana seedlings 真桦幼苗
- Betula maximowicziana 真桦
- Betula pendula × B. pendula var. cardica Sok. 欧洲白桦
- 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。
- Diffuseporous wood is seen for example in yellow birch (Betula lutea). 加拿大桦（黄桦）的木材即为散孔材。
- Carbon storage of and Betula albo-sinensis were higher than other three types. 锐齿栎、油松主要分布于中低海拔地带；
- Toadstools were collected from a range of pure stands of Betula and Pinus both in Britain and the U.S.A. 从英国和美国一系列桦木和松树纯林中收集蕈体。
- It can be concluded that Bidens maximowicziana appeares to be a moderate Pb accumulator making it suitable for phytoremediation of Pb contaminated soil. (kg.;d)-1
- A pair of primers was designed based on the analysis of MADS3 from Betula petulla and AP1 from Arabidopsis thaliana. 在分析了欧洲白桦MADS3与拟南芥AP1中的保守性后,设计了一对引物。
- 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。
- We still skim the backwaters of ponds and streams for the seed of Betula, Acer Salix and Populus species. 我们仍然要在池塘的静水上和溪流中捞取桦木，槭树、杨、柳等树的种子。
- The genetic variations of seedling traits among open-pollinated families of plus trees of Betula luminfera H. Winkl. 光皮桦优良单株自由授粉子代苗期性状的遗传变异。
- Betula ermanii and Alnus mandshurica predominated in the colonizing woody species on forest boundaries. 林缘入侵物种主要由岳桦和东北赤杨组成。
- 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
- The results showed that the dry weights of all theplants cultivated in biosolids increased compared with control sample, and the difference between Bidens maximowicziana Oett and control sample was extremely significant. 结果表明,生长于污泥中的植物其干重比对照均有不同程度的增加,其中羽叶鬼针草与对照相比差异极显著;
- The identifying characteristics of eight weed seeds of Bidens L. in compositae were described in this paper. These genera are B. pilosa, B. bipinnata, B. parviflora, B. biternata, B. frondosa, B. cernua, B. maximowicziana and B. tripartite. 杂草种子的识别特征进行了描述。 这 8种鬼针草为 :三叶鬼针草 (B .;pilosa)、鬼针草 (B
- Arimatsu economic timber, Parkinson, Chatham, Betula, Tilia, Green and other species. 经济用材林有松、柏、漆、桦、椴、青等树种。
- In coMpetition with other accoMpanying species, the Betula luMinifera is a predoMinant tree at present. 另外，光皮桦在与其它主要伴生树种的竞争中，目前处于优势地位。
- The effect of moisture content on seed longevity of 3 Betula luminifera families (3, 20 and 22) was explored. 摘要研究了不同家系（3、20、22号）光皮桦种子在不同含水量条件下的贮藏寿命。
