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对苏南宁镇丘陵中等立地条件,初植密度2400株/hm~2,9年生种源试验林(10年生幼树)19个杉木种源的生长和木材建筑材性的研究表明,种源间存在着显著的差异。变异方差分量:生长性状>材性性状。材性性状:抗弯强度>气干密度>顺纹抗压强度>干缩系数。产地温度气象因子(年均温,≥10℃年积温)是影响种源材性性状变异的主要作用因子。供试种源的材性材质,北带>南带>中带。综合评定,初步选出广西融水,江西全南种源和广东信宜,广西贺县种源为当地杉木短轮伐建筑材优良种源,可分别用于短轮伐中小径材集约经营和农用椽材、小径材作业造林。
The study on the growth and wood properties of 19 Chinese fir provenances at 2,400 plantlets / hm ~ 2, 9-year-old provenance forest (10-year-old sapling) There are significant differences. Variance variance components: Growth traits> Material traits. Material properties: flexural strength> air dry density> compressive strength of the grain> shrinkage coefficient. The meteorological factors of origin temperature (annual average temperature, ≥10 ℃ annual accumulated temperature) are the main effect factors that affect the variation of seed material traits. Material resources for test provenance, North Belt> South Belt> Medium Belt. According to the comprehensive assessment, Guangxi Rongshui, Jiangxi Quannan provenance and Guangdong Xinyi, Guangxi Hexian provenance were selected as good provenances for local Cunninghamia lanceolata short rotation logging building materials, Agricultural rafters, small-diameter timber afforestation.