加勒比松种源试验

PROVENANCE TEST OF CARIBBEAN PINE

在广东遂溪进行的加勒比松种源试验表明：３个加勒比松变种及种源间存在着显著差异，在雷州半岛正种加勒比松干形通直，生长迅速，病虫害少，抗风力强。湛江林木良种场种子园生产的正种加勒比松子代，其生长及干形有较大改善，可在我国热带，南亚热带广泛造林使用；洪都拉斯加勒比松幼林阶段病虫害发生比较严重，不适宜在雷州半岛种植，巴哈马加勒比松可扩大种植。

The results of a ten year provenance test of Caribbean pine planted in June 1984 at Suixi Forest Experiment Station, in replicated, 25 tree, multi row plots are reported. In the test,there were 7 sources of var.hondurensis (PCH) including one from local Zhanjiang seed production area of Poptun; 7 sources of var.bahamensis (PCB), 3 sources of var.caribaea (PCC), including one from Zhanjiang clonal seed orchard and a local SPA source of slash pine (PEE) as control. The variety mean volumes of PCC, PCB and PCH were 25%～80% larger than that of the slash pine. PCH sources had the lowest productivity due to greater damage by typhoon, tip moth and brown needle disease. Based on a multitrait criterion incorporating volume, straightness and survival, PCC (orchard provenance No.10) should be preferred to for planting rather than slash pine.