楠竹单位面积的密度直接影响更新生长,同时,立竹保留代数对新生竹的数量和质量影响很大,万岭林区人民早有“存三去四莫留七”的经验,楠竹两年为一龄级,存三去四就是砍去八年以上老竹,保留六年生以下壮年竹.壮年竹是竹林更新的物质基础.壮年竹与新生竹成正比.据二类调查统计;万岭国有林每亩平均立竹为176株.壮年竹约占39.17%,每亩 Bamboo density per unit area directly affects the regeneration growth, at the same time, standing bamboo algebra on the number and quality of new bamboo great impact, people in Wanling forest area has long been “save three to four Mo Liu seven” experience, Nan bamboo two Year for the first age, save three to four is cut off more than eight years old bamboo, bamboo six years of age to retain the following Zhuang. Zhuang bamboo is the material basis for the renewal of bamboo. Ling State-owned forest per acre of bamboo stand for the average of 176. Zhuang year bamboo accounted for about 39.17% per acre