长嘴黄藤和异株藤人工幼林生长初报

长嘴黄藤和异株藤在我国已有引种驯化成功的记录,但尚未见到这两个棕榈藤种营造成林的报道.本研究调查了广东省揭东县长嘴黄藤和异株藤人工幼林的生长情况.结果表明,采用3 m×3 m株行距、2株丛栽和每年4次的除杂措施,长嘴黄藤和异株藤人工林的一次造林保存率在85%以上,两个藤种3年生人工幼林的藤茎总数分别达4 400条/hm2和8 467条/hm2,总长度达6 567 m/hm2和8 600 m/hm2,生物量达1 110.8 kg/hm2和577.3 kg/hm2,经济价值却为140.1元/hm2和381.6元/hm2.由此得到结论:虽然这两个棕榈藤种人工林的经济价值还小于投入成本,但从技术上说广东省揭东县以南的华南地区可以营造长嘴黄藤和异株藤人工林.研究结果将为长嘴黄藤和异株藤人工林的发展提供参考.

Preliminary Study on Young Plantations of Daemonorops jenkinsiana and Calamus dioicus

There are records of successful introductions of Daemonorops jenkinsiana and Calamus dioicus into China; however, there have not been any reports on the plantations of these two rattan species to date. Investigations were conducted in three-year-old plantations of D. jenkinsiana and C. dioicus in Jiedong County, Guangdong Province with sample areas of 10 square meters. The results show that survival rates of both D. jenkinsiana and C. dioicus are beyond 85%, with 4400 and 8467 stems per hectare respectively; that their lengths are 6 567 and 8 600 meters per hectare respectively, with bio-mass being 1 110.8 and 577.3 kg per hectare respectively; and that their values are only 140.1 and 381.6 Yuan per hectare, however. Based on the data above and records before, it can be concluded that it is feasible to afforest plantations of D. jenkinsiana and C. dioicus southward from Jieyang, Guangdong Province. It is unnecessary to evaluate now the value of these plantations because they are still young but it is necessary to grow them as supplement plants to increase income.