对2012年在福建省屏南县造林的长林18号油茶良种在不同坡向、不同坡位生长量进行调查。结果表明：不同坡向的平均地径、平均树高、平均冠幅生长量目前未表现出显著差异，保存率达极显著差异；平均地径、平均冠幅均以半阳坡最高，达2.59 cm、90.8 cm；平均树高以半阳坡、阴坡较高，分别为124.8 cm、124.2 cm；平均保存率以阴坡、半阳坡较高，分别达98.2%、92.0%。不同坡位的生长量均以下坡最高，平均地径、平均树高、平均冠幅、平均保存率分别达2.56 cm、125.8 cm、91.6 cm、98.6%。不同坡向油茶平均结实率以阳坡较高，达11.6%，半阳坡次之，阴坡较低；不同坡位油茶平均结实率以下坡较高11.4%；中坡次之，上坡较低。%An investigation was made on the growth of the high-quality oil-tea variety Changlin No.18 planted in 2012 in different slope directions and slope positions. The results showed that at present, the growth of the average diameter, mean tree height and mean crown of the variety planted in different slope directions showed no significant difference, the differ-ences of the survival rates was significant. The average diameter and average crown on the half sunny slope was the high-est, namely, 2.59 cm and 90.8 cm respectively; the average tree height on the half sunny slope and shady slope were rela-tively higher, 124.8 cm and 124.2 cm respectively; the average survival rates on shady slope, half sunny slope were rela-tively higher, 98.2%, 98.2% respectively. Among different slope positions, the growth on downhill was the highest, the aver-age mean diameter, mean tree height, crown amplitude and the average survival rate were 2.56 cm, 125.8 cm, 91.6 cm and 98.6% respectively. The average seed setting rate on the sunny slope was the highest, reaching 11.6%, that on the half sunny slope was second and that on the shady slope was lowest; as for the average seed setting rates on different slope po-sitions, that on downhill was the highest, 11.4%; that on the middle slope was the second and that on the uphill was the lowest.
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