毛竹是靠竹鞭(地下茎)上的鞭芽发笋长成竹的。竹鞭的长势是否旺盛,决定着毛竹林质量的优劣及产量的高低。毛竹鞭龄1～2年为幼龄阶段,3～6年为壮龄阶段,7年以上为老龄阶段。以5～6年的竹鞭发笋率最高。在整个竹鞭系统中,幼龄、壮龄竹鞭应占80％以上,才能保持长势旺盛,增产增收。对毛竹丰产林,尤其是笋用林必须: Bamboo is bamboo shoots (underground stems) on the whip shoots grow bamboo. Bamboo whip is strong, determines the pros and cons of bamboo quality and yield levels. Bamboo whip age of 1 to 2 years for the young stage, 3 to 6 years for the strong stage, more than 7 years for the elderly stage. To 5 to 6 years of whip hair shoot the highest rate. In the entire whip system, young, older bamboo whip should account for more than 80%, in order to maintain strong growth, increase production and income. Bamboo yield forest, especially bamboo forest must: