Species diversity was higher on Yunnan pine than on other seedlings.
云南松幼苗期外生菌根真菌多样性比其它植物幼苗期的高。
The forest fires in Yunnan pine forest areas resulted from many kinds of natural factors and human activities.
云南松林区发生的森林火灾是多种自然因素和人为活动综合作用的结果。
The productive technology of derosination of Yunnan pine pollen was developed using the supercritical CO2 extraction technique.
应用超临界CO2萃取技术研究云南松花粉脱脂的工艺。
The resin content in timber of Yunnan pine was mainly controled by hereditary substance, and also affected by the geographic variation of grow place.
云南松木材的松脂含量主要决定于遗传因素，但又受生长地理位置变异的影响。
The paper also gives formulae for different Yunnan pine forest areas to calculate their own economic threshold according to their special situations.
本文还给出了各云南松林区可以用来根据自己的具体情况计算出适合自己的经济阈值的公式。
Timber of Yunnan pine from plantation was treated with hot pressing, water boiling and steaming, the profile density of treated timber was determined.
采用热压、水煮和汽蒸对云南松人工林的云南松材进行了处理，对经处理的云南松材剖面密度进行了测定。
Using baicalin as the standard sample, the flavone substances in pollen of Yunnan pine were determined through methyl alcohol back flow extraction and ultraviolet spectrophotometer.
以黄芩甙为标样，对云南松花粉中黄酮类化合物采用甲醇回流提取，用紫外分光光度法进行测定。
Using baicalin as the standard sample, the flavone substances in pollen of Yunnan pine were determined through methyl alcohol back flow extraction and ultraviolet spectrophotometer.
以黄芩甙为标样，对云南松花粉中黄酮类化合物采用甲醇回流提取，用紫外分光光度法进行测定。
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