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三尖杉属粗榧科粗榧属,常绿乔木。木材黄褐色,纹理细致,坚实而有弹性,比重0.59-0.71,可作农具和家具。种子可榨油,含油量达64.22%,出油率51.5%。三尖杉还可作为庭院观尝树种。该树种都散生在天然林中。为进行人工造林以加速其发展,1972年11月我们在林内收集种子(10月初成熟),用沙揉搓去果肉,取出种子凉干后混沙贮藏(种子千粒重800-840克)。1973年2月下旬在苗圃点播,但当年只有一粒种子发芽。为了解其发芽规律,我们又于1974年2月底从原苗圃地内找出143粒种子,按株行距10×20厘米点播在新圃地上。4月中旬发芽,4月底检查发芽率为87.4%。5月初我们搭了荫棚(透光度为50%)。5月-8月我们喷洒3次波尔多液,追施4次氮肥,并进行灌溉抗旱保苗。在苗木停止生长后进行调查,苗高18-26厘米,根径0.3-0.5厘米。通过这一试验我们初步认为,三尖杉种子休眠期较长,宜在土内埋藏1年再播种。
Cephalotaxus is a rough snake, is an evergreen tree. Timber brown, detailed texture, solid and flexible, the proportion of 0.59-0.71, can be used as farm tools and furniture. Seeds can be pressed oil, oil content of 64.22%, the oil yield of 51.5%. Cephalotaxus can also be used as a yard to observe the species. The tree species are scattered in the natural forest. In order to accelerate the development of artificial reforestation, in November 1972 we collected seeds in the forest (mature in early October) and rubbed the pulp with sand to remove the seeds and dried them before mixing for storage (800-840 g seed weight). In late February 1973 in nursery on demand, but then only one seed germination. In order to understand the law of germination, we also found 143 seeds from the original nursery garden at the end of February 1974, spotted on the nursery garden at a spacing of 10 × 20 cm. Sprouting in mid April and germination rate 87.4% at the end of April. In early May, we took a shade shed (transmittance of 50%). From May to August, we sprayed Bordeaux mixture 3 times, topdressing nitrogenous fertilizer 4 times, and irrigation and seedling protection. Seedlings stopped growing after the survey, height 18-26 cm, diameter 0.3-0.5 cm. Through this experiment, we initially believe that Cunninghamia lanceolata seed dormancy longer, should be buried in the soil for another year sowing.