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该项研究收集我国侧柏自然分布区内(17个省市)102个采种点的种子,分别在山东省有代表性的石灰岩山地建立了3处试验点。通过苗期和造林对比试验,证明侧柏群体遗传变异模式属由西北到东南斜纬向渐变型,山东、河南、河北和江苏部分地区是高生长量和适应性强的最佳种源区,并提出了山东省的优良采种点。
The study collected 102 seeds from 102 species sites in the natural distribution area (17 provinces and cities) of Platycladus orientalis and set up 3 test sites in representative limestone mountains in Shandong Province. Through the seedling stage and afforestation comparative experiment, it was proved that the genetic variation pattern of oriental arborvitae belonged to the zonal gradient from northwest to southeast, and the best provenance area with high growth and adaptability in Shandong, Henan, Hebei and Jiangsu parts, And put forward the excellent seed collection point in Shandong Province.