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红松是我国珍贵用材树种之一。为扩大红松用材林基地,东北林区已营造了大面积的红松林,也积累了许多好的造林经验。但是,人工红松林林木分杈现象,仍是人们极其关注的问题。1985—1986年,我们在桓仁县八甸子乡大南沟村办林场进行定位研究,在本溪县草河口试验林场做辅助调查,从树高生长角度对红松分杈现象做了一些探索。一、试验区自然概况试验区设在大南沟林场的严家大坡、学校山场和大西岔三处人工红松纯林中,林龄分别为10、7和5年。该林场约位于东经124°51′、
Korean pine is one of our precious timber species. In order to expand the base of Korean pine forest, the northeast forest area has built a large area of Korean pine forest and accumulated many good afforestation experiences. However, the phenomenon of bifurcation of artificial Korean pine forest is still an issue of great concern to people. From 1985 to 1986, we conducted a research on the forest farm of Da Nan Gou Village in Badianzi Township, Huanren County. We conducted a supplementary survey on Caohekou Experimental Forest Farm in Benxi County, and explored the phenomenon of bifurcation of Korean pine trees from the perspective of tree height growth. First, the natural conditions of the pilot area The experimental area is located in the Dagangou forest farms Yanjiabao, school mountain field and Daxifu three artificial Korean pine pure forest, respectively, age of 10,7 and 5 years. The farm is about 124 ° 51 ’