卵果松地理种源试验

对来自中美洲4个国家16个地区的卵果松(Pinus oocarpa)种源进行苗期试验,测定苗高和地径生长量,并对其55个月生的苗高和地径进行方差分析,共结果发现:不同种源的卵果松,在同一试验地上,其苗高、地径差异极为显著,初步选出超过对照114—125％的种源,滇南海拔1200米以下地区可引种洪都拉斯种源造林。本试验还对卵果松形态特征的地理变异规律及其相互间的关系进行了初步探讨。

THE GEOGRAPHICAL PROVENANCE TEST OF PINUS OOCARPA

This seedling test used provenances of four countries, sixteen areas from Central America. We surveyed the seedling height and the ground diameter increment of seedling and carried out the analysis of variance when 55 monthes old. We find out: Pinus oocarpa of different provenances, at the same testing situation, the variance of seedling height and ground piameter are very striking. We have preliminarily selected some provenances of those increase more than 111-126% of control, one of them which comes from Honduras can be used in forcs-tation at those places that lower than 1200 meters above sea-level at southern Yunnan. The test has also investigated the geographical variation regularity of morphological characters of Pinus oocarpa and the relations between them.