四季竹叶面积指数与竹笋产量的关系

Preliminary Study on the Correlation between Yield of Bamboo Shoot and Leaf Area Index of Oligostachyum lubricum

通过建立四季竹叶面积指数与立竹胸径、密度、枝盘数等因子间的回归经验式,发现其间存在着显著的相关关系,且均是影响竹笋产量的重要林分结构因子,其中叶面积指数与竹笋产量紧密相关,当叶面积指数为10.339时,竹笋产量最高.提出了为达到四季竹竹林高产高效可持续经营的目标,应合理调控竹林的立竹度和胸径,使叶面积指数达到竹林丰产的要求.

Regression equations among the leaf area index （ LAI）, bamboo stock diameter at breast height （ DBH）, density of bamboo plantation and the number of branch strata were set, and it was discovered that there were close correlations among these indices. It was showed that the yield of bamboo shoot was significantly corre- lated with LAI of Oligostachyum lubricum, and the maximum yield of bamboo shoot could be obtained when the LAI was 10.339. It was proposed that the density of the bamboo plantation and DBH indexes should be regulated reasonably to keep appropriate LAI and so as to realize the sustainable target for managing the plantation of Oligostachyum lubricum with rational yield and high efficiency.