P. ussuriensis Kom are a native tree specie unique to China, the vanguard tree of China's afforestation of barren hills and important timber, pulp wood, bio-energy source. In order to breed the superior provenance with the fast growing, tolerant for the eastern mountain area of Heilongjiang Province, select 10 races by latitude gradient in 2002 from the P. ussuriensis Kom natural distributing zone. Sift 10-20 plus trees for every provenance and propagating on 2004 and plant the experiment forest wit...
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