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牡丹江林区红松人工林定向培育试验孙海双（牡丹江营林分公司）杨传林（黑龙江省绥阳林业局）闫洪伟（黑龙江省东京城林业局红松作为牡丹江林区主要的乡土造林树种自１９５２年起一直营造至今，现已累积造林面积达２３．３万ｈｍ２，其中２０年以上生适于定向培育的红松人...
Directional Breeding of Pinus koraiensis Plantations in Mudanjiang Forest Region Sun Haishuang (Mudanjiang Yinglin Branch) Yang Chuanlin (Heilongjiang Suiyang Forestry Bureau) Yan Hongwei (Forestry Bureau of Dongcheng Forestry Bureau of Heilongjiang Province as the main afforestation tree species in Mudanjiang Forest Region since 1952 Has been created so far, is now an afforestation area of 23.3 million hm2, of which more than 20 years suitable for oriented cultivation of Korean pine people ...