浙江农林大学学报2024，Vol.41Issue(4)：735-743,9.DOI:10.11833/j.issn.2095-0756.20230581
宁夏罗山松阿扁叶蜂幼虫发生的关键影响因子
Key factors affecting the occurrence of Acantholyda posticalis larvae in Luoshan Mountains,Ningxia
摘要
Abstract
[Objective]The objective is to study the relationship between the occurrence of Acantholyda posticalis larvae and stand and site factors,and screen out the key factors affecting the occurrence of A.posticalis larvae.[Method]21 sample plots were set up from 2022 to 2023 in the main occurrence areas of the larvae in Luoshan National Nature Reserve of Ningxia to investigate the larval population density of A.posticalis,stand factors and site factors.Using stepwise regression analysis,the key factors affecting the average population density of A.posticalis larvae were screened out.The relationship between mean population density and key factors was obtained by variance analysis and correlation analysis.[Result]By stepwise regression analysis,it was found that herb coverage,crown width,canopy density,and slope position were the key factors affecting A.posticalis larval occurrence.A linear prediction equation for the average larval population density was established based on the key factors.Among the 4 key factors selected,herb coverage and slope position inhibited the larval occurrence,while crown width and canopy density promoted the larval occurrence.[Conclusion]Larvae of A.posticalis are easy to occur in uphill forest areas with low herb coverage,high canopy density and crown width in the understory.It is suggested that these forest areas be taken as the key areas for prevention and control,and herb coverage be adjusted to above 0.3,crown width below 2.5 m and canopy density below 0.7,so as to realize the ecological control of the larval population of A.posticalis in this area.[Ch,5 fig.3 tab.39 ref.]关键词
松阿扁叶蜂/平均虫口密度/草本盖度/冠幅/郁闭度/坡位Key words
Acantholyda posticalis/average population density/herb coverage/crown width/canopy density/slope position分类
农业科技引用本文复制引用
兰珍珍,王新谱,施兴文,董川..宁夏罗山松阿扁叶蜂幼虫发生的关键影响因子[J].浙江农林大学学报,2024,41(4):735-743,9.基金项目
宁夏回族自治区重点研发计划项目(2021BEG02009) （2021BEG02009）
