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侧柏是我国主要造林树种之一。栽培历史悠久,国内尚有很多千年以上的古柏;适应性强,耐干旱,耐严寒(能暂时忍耐-35℃的低温),对土壤要求不严格,在向阳山坡和石缝中均能生长,分布极广。并在其分布区内气候、土壤等生态因子的影响下,使其形成具有遗传差异的一些地方种群,它们在生长量和适应性上都不尽相同。为了比较鉴定各种源间及种源内个体间的适应性与生长量,以便为今后种源选择和种源调拨提供科学依据。1983—1985我场根据全国侧柏种源试验协作组的要求,在泉山自然保护区进行了侧柏种源苗期阶段试验,现将两年来试验结果整理如下:
Platycladus orientalis is one of the main afforestation species in our country. There is a long history of cultivation in China. There are many ancient cypresses more than one thousand years old in China. They are adaptable, drought-resistant and cold-tolerant (capable of temporarily enduring the low temperature of -35 ℃). They are not strict with the soil and grow on the sunny hillsides and crevices , A very wide distribution. And under the influence of ecological factors such as climate and soil in its distribution area, it forms some local populations with genetic differences, which all have different growth amount and adaptability. In order to compare and appraise the adaptability and growth of individuals among different sources and provenances, it will provide a scientific basis for future selection and breeding of provenances. 1983-1985 According to the requirements of the Cooperative Group of Oriental Arborvitae Germplasm Experiment, we conducted the seedling stage test of Platycladus orientalis in the Quanshan Nature Reserve. The results of the two years are summarized as follows: