基于N／S的绿竹笋用林丰产结构控制研究  

Research on Structure Control of High Yield Bambusa oldhami Bamboo Shoot Stands Basing on N/S

作　　者：陈双林[1] 杨清平[1] 陈长远 

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江富阳311400 [2]福建省漳浦县林业局,福建漳浦363200

出　　处：《林业科学研究》2008年第6期741-744,共4页Forest Research

基　　金：国家“十五”攻关项目“竹子种质资源培育及商品竹林可持续经营技术”(2001BA506B01)资助

摘　　要：根据丛生竹以竹丛为无性系单元的特点，提出了丛立竹数与根盘面积比（NIS）的丛生竹林分结构概念，以绿竹笋用竹为对象，开展了竹林地环境资源高效利用的N／S结构控制试验，结果表明：N／S与丛竹笋产量呈单峰抛物线形关系，N／S优化配比为4．0～5．0株·m^-2；竹丛根盘面积与竹冠平面面积呈线性增长关系，可以通过增大初植密度、扩大竹丛根盘面积来提高环境资源利用率。丰产林分结构立竹数为9200～11500株·hm^-2，竹林竹丛根盘面积、土地利用率分别可达到2300m^2·hm^-2、23．0％，初植密度可提高到1050丛·hm^-2左右。According to the charaters of sympodial bamboo which developed an uniform clone of the whole clump, this paper promoted the conception of N/S for sympodial bamboo stands＇structure ： the number of living culms （N） to the surface of the subterranean parts occupied of a clump （S）. The structure control of high efficiency utilizing environment resources for bamboo stands on Bambusa oldhami was investigated. The results suggested that the relationship of N/S and cluster shoots output showed a single-peak parabola, and the best ratio of N/S was 4.0-- 5.0 culms · m^ -2 the surface of the subterranean parts occupied of a clump increased with cluster crown linearly. Environment utilizing efficiency could be increased by increasing plant density and expanding the surface of the subterranean parts. The normal high yield structures were as following： individual numbers was 9 200--11 500 culms· hm^ -2, the surface of the subterranean parts was 2 300 m^2 · hm^ -2, soil utilizing efficiency approach to 23.0%, and plant density could be increased to about 1 050 clusters · hm^-2.

关 键 词：绿竹 丛立竹数与根盘面积比 竹冠平面面积 竹笋产量 

分 类 号：S795[农业科学—林木遗传育种]