麻竹笋用林林分结构优化模式研究

以麻竹笋用林优质高效为目标，在林分结构主导因子与竹笋经济性状关系研究基础上，趋势面法构建丰产林分结构模式。研究表明：丛立竹数与出笋数呈线性增长规律，与笋个体质量和规格笋比例显著相关，6株以下时，笋个体质量随立竹数增加而增加，9株及以上时，笋个体质量和规格笋比例显著下降；立竹胸径与笋个体质量呈线性增长趋势，与丛出笋数无显著相关；丰产林分结构模式为丛立竹数5～7株，立竹胸径5～6cm，立竹年龄3年以下，1～2龄立竹各占50％。模式增产效果好，低产林分实施后次年可增产竹笋63．5％，规格笋比例提高12．9％。

A Study on the Optimized Mode of Forest Structure of Dendrocalamus latiflorus for Bamboo Shoot

Aiming at high quality and benefit of Dendrocalamus latiflorus for bamboo shoot, based on the study of relations among main factors of forest structure and economical characters of bamboo shoot, a high-yielding forest structure was established by trend face measure. The results showed that there is a linear increasing law between cluster bamboo stalks and shoot number, notable relation with unit shoot weight and standard shoot proportion, unit shoot weight increases with cluster bamboo stalks when under 6 stalks, but unit shoot weight and standard shoot proportion declines notably when over 9 stalks; diameter at breast height(DBH) increases linearly with unit shoot weight, but no notable relation with shoot number; the mode of high-yielding forest structure is: cluster bamboo stalks 5~7,DBH 5~6 cm,stalk year under 3, one year and two years stalk proportion 50%. The mode has a good effect on increasing production,the shoot output increases by 63.5% and the standard shoot proportion increases by 12.9%,one year after the implementation of the mode.