油松半同胞子代及亲本木材生长轮宽度与密度的研究

比较分析了陕西省陇县八渡林场油松(Pinus tabulaeformis)木材的生长轮宽度、基本密度.结果表明:子代家系间生长轮宽度差异不明显,基本密度在子代家系间存在显著差异,不同生长轮之间差异性亦很显著.通过对亲本与子代家系间木材性状与生长性状的综合比较,认为所选优树5号家系,9号家系,10号家系,36号家系等均较优良.

Comparison of the Wood Growth Ring Width and Basic Density between the Half-sib Progeny and Parent of Pinus tabulaeformis Carr

The paper compares and analyses growth ring width and basic density of Pinus tabulaeformis which grow in Badu forest farm of Longxian county in Shaanxi Province . The result illustrates that the differences of growth ring width among progeny families are not very obvious,but the differences of the basic density among them are very obvious and the difference of different growth rings also the same. Through the synthetical comparison of wood properties and growth properties which lie in parent family and progeny family, the paper considers that the selected 5 family, 9 family, 10 family, 36 family, 33 family etc. are all much better.