毛竹笋竹两用林改建大径竹林技术初报

选择朝北的山坡或山岙地的笋竹两用林林分,通过采取增加竹林密度和选粗壮的竹笋留养新竹的技术措施将笋竹两用林改建为毛竹大径材林分。经过3年的试验,结果显示,新竹平均胸径增加0.94 cm;大径材(胸径≥ 12 cm)株数所占比重提高了17.98个百分点;林分竹材产量增加34.3%;大径竹材产量提高14.8%;每度新竹产值增加36.6%。表明毛竹笋竹两用林改建大径竹林是可行的。

Preliminary Report on Transforming Timber-shoot Moso Forests into Large-diameter Bamboo Forests

Timber-shoot Phyllostachys pubescens stands on the northern slopes of the mountain or plains were selected to be transformed into large-diameter forests through increasing the bamboo density and choosing stout bamboo shoot. After 3-year experiment, the results showed that： （1） the average DBH of new bamboo increased by 0.94 cm; （2） the number of large-diameter bamboos （DBH ≥12 cm） had higher share equal to 17.98 percentage points. （3） the yield of timber in the forests grew by 34.3%; （4） the yield of large-diameter bamboo timber jumped by 14.8%; and （5） the production value increases 36.6% per degree. Therefore, it is feasible to transform timber-shoot moso stands to large-diameter forest.