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以往在我省石质山地多采用侧柏造林。不仅树种单一,而且由于侧柏生长慢,造林后易遭羊群、毒蛾危害,致使造林成活率、保存率均较低,严重影响了山地造林的进展速度。为丰富石质山造林树种,探讨铅笔柏适生范,围加速石质山绿化进程,我们于1978年在肖县凤虎山林场的所里山、藏马峪、郭楼等石质山地营造了铅笔柏、侧柏对比试验林。经调查,1978年铅笔柏造林成活率为95%,侧柏为62%;1983年调查,6年生时,山坡上、中、下部平均生长情况:铅笔柏高2.59米,地径7.18厘米,侧柏高1.32米,地径3.83厘米。铅笔柏高、径生长
In the past in our province to use more Stony Hill afforestation. Not only a single tree species, but also slow growth of Platycladus orientalis, afforestation vulnerable to flocks, moth damage, resulting in afforestation survival rate, preservation rate is low, seriously affected the rate of progress of afforestation. In order to enrich afforestation tree species of stony mountains, to discuss the suitable process of pencil cypress adaptation and to speed up the greening process of stony mountains, we built the stony mountainous areas of Xuli Mountain, Tibetan Horse Valley and Guo Lou in Fengxian Mountain Forest Farm in 1978 Pencil cypress, arborvitae contrast test forest. After investigation, in 1978 the survival rate of Penaeus cypress forest was 95%, Platycladus orientalis was 62%; 1983 survey, 6-year-old hillside, middle and lower part of the average growth: pencil cypress height 2.59 meters, diameter of 7.18 cm side Bo Gao 1.32 meters, 3.83 centimeters in diameter. Pencil height, diameter growth