高产脂马尾松半同胞的产脂力优良单株的选择

通过对11年生33个高产脂马尾松半同胞和1个对照的产脂力、树高、胸径测定表明,有69.7%家系的平均产脂力10 cm割沟单刀产脂量为18.89 g,大于对照的15.9 g,22号家系的平均产脂力还达到30.6 g。有85.3%的家系的平均胸径(11.86 cm)大于对照(10.74 cm),有42.4%家系的平均树高(8.6 m)大于对照(8.4 m)。说明大多数家系的产脂力和胸径生长量都比对照大,而树高只有40%强的家系大于对照树。

Selection of High - Resin - Yield Half- Sib Pinus massoniana Single Tree with Superior Resin- Producing Capacity

The results of determining the resin-producing capacities,tree heights and DBHs of 11-year-old 33high-resin-producing half-sib Pinus massoniana and a control showed that the 10cm?long cupping resin-producing yield of the tapping face of average resin-producing capacities of 69.7% of families was 18.89g,15.9g bigger than that of the control,the average resin-producing capacity of No.22 family even reached 30.6g,the average DBHs(11.86cm)85.3% of 42.4% of families were bigger than that of the control(10.74cm),the average tree height(8.6cm) of 42.4% of families were bigger than that of the controll(8.4m).It showed that the resin-producing capacities and DBH growth amount of most families were bigger than that of the control,whereas the tree height of only 40%and more of families were bigger than the control tree height.