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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2 a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。
Cunninghamia lanceolata plantation selection research on the Chinese fir plantation is of great significance. Nine provenances of Cunninghamia lanceolata and one Chinese fir clone were selected as the research object. Three provenances of Vietnam were used to carry out provenance experiments and selected early. The results showed that: After planting for 2 years, there were obvious differences in the growth of different provenances in the same experimental area, with the same source growing differently in different experimental areas. Northern Vietnam is the most suitable growth area for Chinese fir, followed by the south and the worst in the middle, which may be related to the local climate and other factors. In northern Vietnam, CL9, CL7, CL6, CL4, CL2 and CL1 are provenances, while CL4 and CL1 are provenances in the middle and CL8, CL9 and CL2 in the south. The early results of this experiment will help to provide reference for the selection of adaptive planting areas and fine provenance areas for Cunninghamia lanceolata plantation in Vietnam.