为提高落叶松的营林水平,黑龙江、辽宁、吉林、河北和山西五省联合组织了一次“北方五省落叶松考察论证会”。参加考察论证会的有五省林业厅、林学会的领导同志、科研单位和生产部门的工程技术人员,共32人。自9月2日从黑龙江省带岭实验局开始,到10月11日在山西省太原市结束,历时40天,行程一万多公里,途经五省的22个地(市),46个县。其中包括8个林 To improve the level of larch forests, Heilongjiang, Liaoning, Jilin, Hebei and Shanxi provinces jointly organized a “five provinces in northern larch expedition.” There were 32 forestry department, forestry club leaders, scientific research units and production engineering and technical personnel participating in the expedition demonstration. From Sept. 2 to Heilongjiang Province with Ridge Experimental Station began to October 11 in Taiyuan, Shanxi Province, ended in 40 days, more than 10,000 kilometers of travel, through the five provinces of 22 prefectures (cities), 46 counties . Including eight forest