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在福建省大田梅林国有林场,对5年生的福建柏人工林进行修枝试验,修枝3 a后调查分析树高、胸径和枝下高的生长情况。结果表明:修枝对幼林期福建柏人工林的胸径生长无显著影响,对树高、单株立木材积和枝下高具有正向促进作用,作用由大到小为:修剪枯枝+2轮活枝>修剪枯枝>不修枝。与不修枝相比,修枝3 a后,修剪枯枝处理树高生长增加了57.61%,单株立木材积生长量提高44.86%,枝下高增长了4.43倍;修剪枯枝+2轮活枝处理树高生长量提高55.14%,单株立木材积生长量提高72.37%,枝下高增长了5.62倍。
The 5-year-old Fokienia hodginsii plantation was pruned in the state-owned Forest Farm, Meitou, Daejeon, Fujian Province. After three years of pruning, tree height, diameter at breast height and height growth were measured. The results showed that pruning had no significant effect on the DBH growth of Fokienia hodginsii plantation in young forest, but had a positive effect on tree height, stand volume per plant and branch height. Branches> trimmed branches> no branches. Compared with no pruning, after 3 years of pruning, the height growth of pruning litter increased by 57.61%, the growth of standing volume per plant increased by 44.86% and the height of shoots increased by 4.43 times; The growth of tree height increased by 55.14%, the stand volume per tree increased by 72.37%, and the growth of branches increased by 5.62 folds.