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国营东辽县建安林场,位于辽源市北50华里建安乡所在地西侧马鞍山脚下。该场截止1978年营造人工林99,000余亩,其中落叶松86,000亩,占86.8％,而且大部分已郁闭成林,逐步发挥效益。但由于造林当时采用1×1米或1×1.5米的密度,林分光照不足,通风不良,营养空间紧张。因此,林木分化明显,高低不均,粗细不匀,五阶木明显出现,卫生状况不良,严重地影响林木的正常生长和发育。
State-owned forest farm in Dongliao County, Liaoyuan City, located in the town of Anhua 50 North West, at the foot of Ma On Shan. By the end of 1978, more than 99,000 acres of artificial forests were planted, of which 86,000 were larch trees, accounting for 86.8% of the total. Much of the plantation was closed and the benefits gradually gained. However, due to the afforestation was the use of 1 × 1 m or 1 × 1.5 m density, lack of adequate lighting, poor ventilation, nutritional space tension. Therefore, the obvious differentiation of trees, unevenness, uneven thickness, the fifth-order obviously appear, poor health, seriously affecting the normal growth and development of trees.