北京林业大学学报2024，Vol.46Issue(4)：158-166,9.DOI:10.12171/j.1000-1522.20230257
基于抚育整枝目标的毛白杨枝条冲击切割性能适应性分析
Adaptability analysis of impact-cutting performance of Populus tomentosa branches based on the goal of nurturing and pruning
摘要
Abstract
[Objective]In order to increase the impact-cutting efficiency and improve the pruning quality of Populus tomentosa branches,the adaptability of impact-cutting performance of P.tomentosa branches was analyzed by studying the influence of internal factors of the branches on the cutting performance.[Method]In this research,the branches of the fast-growing forest species P.tomentosa,which were widely planted in forest farms in northern China,were taken as the research object,and a self-developed branch cutting platform was used to carry out branch cutting tests.On the basis of single factor test,based on the Box-Benhnken central combination test method,experimental and theoretical studies were conducted to investigate the influence patterns of three internal factors,namely branch diameter,moisture content and branching angle,on the peak cutting force and fracture effect.[Result](1)Cutting mechanism model of impact-cutting performance of P.tomentosa branches was established.(2)Through the optimization analysis of the model,the optimal parameter combination was obtained as branch diameter of 14.7 mm,moisture content of 14.0%,and branching angle of 90°.The peak cutting force under this combination was 370.48 N,and the fracture quality score was 4.6,and the relative deviation between predicted and measured values of peak cutting force and fracture quality score was both less than 5%.(3)Peak cutting force increased linearly with branch diameter,tended to increase and then decrease with increasing branch moisture content,and increased slightly with increasing branching angle.[Conclusion]Selecting the tree age of 7 years for pruning operation,and choosing the season of operation in autumn and winter can obtain better pruning quality.This study can provide data support for the research and development of pruning equipment for fast-growing forests in combination with the optimization of forest nursery methods.关键词
机械化/抚育整枝/冲击切割/毛白杨枝条/切割适应性/切割质量参数Key words
mechanization/tree nurturing and pruning/impact cutting/Populus tomentosa branch/cutting adaptability/cutting quality parameter分类
农业科技引用本文复制引用
吕坤,班以琛,坝仕宏,刘洋,文剑..基于抚育整枝目标的毛白杨枝条冲击切割性能适应性分析[J].北京林业大学学报,2024,46(4):158-166,9.基金项目
宁夏回族自治区重点研发计划重大(重点)项目(2019BBF02009). （重点）
