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武冈林场第二代人工杉木中幼林抚育间伐强度试验表明:a.杉木中幼龄林抚育间伐能促进林分胸径、树高、材积的增长,能使林分的速生期延长1-2年,能有效地提高林分产量,提高木材质量;b.不同的抚育间伐强度类型对林分生长因子的影响效果不同,以株数间伐强度30-40%效果最佳;c.对培育大径材的杉木林分,可实施三次间伐,第一次在9-11年,第二次在14-16年,第三次在19-22年;第三次间伐能明显促进后期林分胸径生长。
The second-generation tending thinning tending strength of young Chinese fir in Wugang Forest Farm showed that: a. The thinning of young-aged forest in Chinese fir could promote the growth of DBH, tree height and volume, and prolong the quick-growth period of stands by 1-2 years , Which can effectively improve the yield of forest and improve the quality of wood; b. Different types of tending thinning have different effects on stand growth factors, with the effect of 30-40% Of the fir stand can be implemented three thinning, the first in 9-11 years, the second in 14-16 years, the third in 19-22 years; the third thinning can significantly promote the growth of the late stand DBH.