广西资源县林下种植箬竹试验

Experiment on Planting Indocalamus tessellatus under Forest Canopy in Ziyuan County,Guangxi Zhuang Autonomous Region

采用正交试验设计法,研究不同树种、不同上层树木郁闭度及不同施肥量对林下箬竹生长的影响,探讨林下大面积种植箬竹的可能性。结果表明,不同上层树木种类对箬竹生长的影响差异不显著;箬竹秆高生长在较大郁闭度(0.6~0.7)下表现最好,叶片生长在中等郁闭度(0.4~0.5)下表现最好,而地径生长则在低郁闭度(0.2~0.3)下表现最好,因此可根据箬竹具体经营目的调整上层林分的郁闭度;施肥能明显促进箬竹秆高、地径及叶片生长,施肥量越大对箬竹生长的促进作用越大。研究结果可为定向培育箬竹秆用林、叶用林或秆叶两用林提供科学依据。

Using the orthogonal experimental design method,this study aims to investigate the effects of species,canopy densities and fertilization rates on the growth of Indocalamus tessellatus under forest,and explore the possibility of large-scale understorey planting of I.tessellatus.The results show that there is no significant difference in the influence of different upper tree species on the growth of I.tessellatus.The culm growth of I.tessellatus is best under high canopy density(0.6-0.7),the leaf growth is best under medium canopy density(0.4-0.5),while the diameter growth is best under low canopy density(0.2-0.3).Therefore,the canopy density of the upper forest can be adjusted according to the specific management purpose of I.tessellatus.Fertilization can significantly promote the growth of culm height,ground diameter and leaf growth of I.tessellatus,and the greater the amount of fertilization,the more evident the promoting effect on the growth of I.tessellatus.The research results can provide technical support for the targeted cultivation of I.tessellatus forest for timber,leaf,or both timber and leaf.