杜仲人工林生物量及生产力研究  

Studies on the Biomass and Productivity of Eucommia ulmoides Plantation

作　　者：周政贤 谢双喜 

机构地区：[1]贵阳农学院

出　　处：《林业科学研究》1994年第6期646-651,共6页Forest Research

摘　　要：对贵州遵义、湖南慈利２６～２７年生杜仲人工林进行２ａ的生物量研究，调查标准地２０块，测定样木８０株，叶面积７１组。研究结果表明，立地条件好的大于立地条件差的生物量；相同立地条件下，干、枝生物量比例随年龄增大而增加，叶、根生物量下降，而皮的生物量却保持较为恒定的比例，其中根皮量可占总皮量３０％左右，采伐更新时应加以利用；同一林分中，生物量最大的为优势木，其次为中级木，最小的为被压木。通过林分密度调控和选择适宜的立地条件，以提高叶面积指数，是提高杜仲生产力的重要途径；建立的杜仲单株各器官生物量的回归方程，可供生产中应用。Studies on the biomass of Eucommia ulmoides Plantation of 2 6～2 7 years oldwere conducted in Zunyi, Guizhou Province and Cili, Hunan Province with 20 plots, 80 sam-pling trees and 71 leaf-surface groups. The results show that the biomass of a stand on agood site is greater than that of another on a poorer site and that on the same site condition,the trunk and branch biomass ratio increases with the increase of age, but the leaf and rootbiomass decreases with the increase of age, and the bark biomass keeps more stable. Theroot′s cuticle is some 30%of the total and it can be utilized after cutting. In the same stand,the dominant tree has the maximum biomass, the middle ones the second and the suppressedones the minimum,controlling the density of the stand and choosing the suitable site for cul-tivation are the two important measures to increase the yield of Eucommia ulmoides.Besides,the establishment of regression equation for each nutritions organ′s biomass of individual treecan be used in practical production.

关 键 词：杜仲 人工林 生物量 生产力 

分 类 号：S567.190.1[农业科学—中草药栽培]