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Larch (Larix olgensis) is an important tree species in northern China, is a major pulp and paper fiber material. In this study, Heilongjiang Province, Northeast Forestry University Experimental Forest Hill hat children 11 kinds of sources of growth traits larch, timber material properties, chemical composition were measured, revealing different provenances as well as radial and vertical larch growth and wood variation of the results showed that: 1.25 years larch stand average tree height, diameter, volume, crown the best provenance for the small North Lake, followed by white Tachiyama provenance. Various sources between tree height, diameter, volume, crown differences were significant (P <0.05), tree height, DBH, volume growth index heritability were above 50%, indicating that these growth targets by more than moderate genetic control. (2) the average basic density and variety of sources latewood percentage difference was not significant (P> 0.05), basic density and latewood rate is affected by the weaker genetic control. The average basic density was higher provenance Tianqiaoling, and dragons. Higher average latewood provenance of Shirakawa, Hailin, and dragons. 3 provenances fiber length is higher and the dragon with the big stones, fiber aspect ratio greater provenance as: big stones, and the dragon, white Tachiyama. Between various sources early and late wood fiber morphology difference was significant (P <0.05). Fiber morphology heritability were above 50%, indicating a high degree of fiber morphology by genetic control. A variety of sources at DBH average fiber length changes with age were shown from the pith outwards increasing year by year trend. 4 holocellulose content among a variety of sources and pulp yield difference was significant (P <0.05), 木材 extract, ash, lignin content in provenances were no significant differences between (P> 0.05). Hailin provenance holocellulose content and pulp yield the highest, the lowest ash content, lignin content and extract content is low, the chemical composition of materials from the pulp side, Hailin provenance is a good provenance. 5 to DBH, tree height, volume, basic density, fiber length, aspect ratio, integrated fiber content, lignin content, benzene alcohol extractives content and pulp yield pulpwood as a comprehensive evaluation of the factors. Coordinate the use of integrated assessment drawn: Little North Lake provenance of growth Pulpwood sexual Jianyou pulpwood provenance, followed by white Tachiyama and Tianqiaoling provenance.
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