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辽西地区油松人工林生长抚育间伐强度试验初报李德民，李久平，于宏志，白瑞兴（国营凌源市欺天林场１２２５００）油松是辽西地区的主要造林树种之一，自建国以来，仅朝阳地区就营造了油松３３万多ｈｍ２。国营凌源市欺天林场于１９５４年建场，现有森林面积近９３３３ｈ...
Preliminary Study on Thinning Intensity of Pinus tabulaeformis Plantation in the West Liaoning Province LI De-min, LI Jiu-ping, YU Hong-zhi, BAI Rui-xing (Bullying Timberland Farm 122500, Lingyuan, China) Pinus tabulaeformis is one of the main afforestation species in western Liaoning. The region has created more than 3300 hm2 pine trees. State-owned Lingyuan City, Cheuk Tin Forest Farm built in 1954, the existing forest area of nearly 9333h ...