越南杉木种源早期评价与选择

摘要

Good provenance selection of Chinese fir [ Cunninghammia lanceolata ( Hook) Lamb.] plays a vital role in forest planta-tion in Vietnam.Nine Vietnamese origins and 1 Chinese origin of C.lancoe lata were planted in north, center and south regions of Vietnam for 2 years to select the best provenance for each region.Results showed that after 2 years of growing, in the same test region, different provenances were significantly various in growth, while the same provenance performed variously in different test regions.North Vietnam was the ideal area for Chinese fir production with the most provenances due to its cool climate, followed by the south region.Provenances of CL9, CL7, CL6, CL4, CL2 and CL1 ( overall performance in descending order) were all elite species in the north Vietnam.CL4 and CL1 were the best grown in central Vietnam and CL8, CL9 and CL2 were the best species in the south Vietnam.The early study result of the test contributed to selection of adaptable growing regions for Vietnam Chinese fir plantations and offering references for elite provenance region planning.%杉木良种选择研究对越南杉木人工林有重要意义。以9个越南杉木种源与1个中国杉木无性系为研究对象，于越南3个试验点开展种源试验，并做早期选择。结果表明：种植2a后，在同一试验区不同的种源生长差异明显，同一种源在不同试验区生长不一。越南北部是杉木最适合的生长地区，南部次之，中部最差，这可能与当地的气候等因素有关。在越南北部， CL9、 CL7、 CL6、 CL4、 CL2和CL1种源为优良种源；在中部， CL4和CL1种源是优良种源；在南部，优良种源为CL8、 CL9与CL2。本试验早期研究结果有助于为越南杉木人工林选择适应种植地区和优良种源区规划提供借鉴。