巨桉种子园种子与普通种子造林对比试验初报

Primary Report on the Plantation Comparison Trial of Seeds in Eucalyptus grandis Seed Orchard and the General Seeds

在福建永安国有林场开展了巨桉种子园种子与普通种子造林对比试验,结果表明:4年生时,巨桉种子园种子的林分生长量明显优于普通种子的林分生长量,其中以二代种子园种子的林分生长最快,一代种子园种子的林分次之;桉树种子园的种子造林增益明显,遗传改良成效显著;柳桉与巨桉普通种子造林的林分生长量相似。试验林遭遇-3.9℃寒流袭击仅受到轻微冻害,说明柳桉和巨桉具有较好的耐寒能力,在永安周边地区具有造林推广潜力。

The plantation comparison trial was carried out between seeds in Eucalyptus grandis seed orchard and general seeds in Fujian Yong＇ an National Forest Farm, the results suggested that the growth of trees generated from seed orchards were obviously better than that of the general seeds, that of 2^nd-generation seed orchard ranked as the best and the 1^st-generation the 2^nd. The afforestation gain of seeds of Eucalyptus seeds orchard was evident, genetic improvement effect was significant. The growth of general seeds of Eucalyptus grandis was similar to that of E. saligna. The trial stand suffered light damage during the serious cold flow with - 3.9℃, which showed the cold-tolerance ability of the two Eucalyptus species was better, and they owned the afforestation and popularization abilities in Yong＇an vicinity.