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油松(Pinus tabulaeformis Carr)是辽宁省西部干旱地区荒山造林的主要树种,越来越引起人们的重视。但关于油松造林密度问题,多年来,一直是生产上存在的迫切需要解决的问题之一。为此,我们于1978年10～12月和1979年10月,对这个地区的各种造林密度类型,以及现有不同密度条件下的10～16年生油松人工林的生长情况,进行了全面调查研究,现将初步结果整理如下,以供参考。一、辽宁西部的自然特点辽宁西部地区,虽然东南部邻接渤海,但因沿海有松岭山脉的屏障,西北部有努鲁儿虎
Pinus tabulaeformis Carr is one of the major tree species afforestation in the arid region of western Liaoning Province, which attracts more and more attention. However, the issue of afforestation density of Pinus tabulaeformis has for many years been one of the urgent problems to be solved in production. To this end, we conducted a comprehensive study on the types of planting density in this area from October to December 1978 and October 1979, as well as the growth of Pinus tabulaeformis plantations under the existing conditions of different densities Investigation and research, the preliminary results are summarized below, for reference. First, the natural features of western Liaoning Liaoning western region, although the southeast of the Bohai Sea, but due to the coastal Songling Mountains barrier, north-west Nuluer tiger