福建农业学报2025，Vol.40Issue(3)：307-315,9.DOI:10.19303/j.issn.1008-0384.2025.03.011
林间花绒寄甲种群快速提升的影响因素研究
Conditions to Rapidly Increase Dastarcus helophoroides Population in Pine Forest
摘要
Abstract
[Objective]Factors conducive to rapid rise and maintain the Dastarcus helophoroides population for a sustainable,long-term control of pine wood nematode disease in a forest were analyzed.[Method]Experiments were conducted in nematode-infected areas in Jiangxi Province by releasing D.helophoroides without cutting down or clearing diseased trees were conducted from 2020 to 2023.Impacts of the body size and indoor breeding generations(activity)of D.helophoroides as well as the rate and frequency of the release on the insect density and disease control at the sites were monitored.[Result]Both the increase rate and accumulation of D.helophoroides populations were significantly encouraged by not clearing the infected woods or cutting and burning the diseased trees at the sites.Thus,under the conditions,various D.helophoroides release measures were implemented.It was found that the release of the local species from parents with low indoor breeding generations(i.e.,the highly active F3 generation)and large body at a rate of 1∶1(i.e.,number of nematode invasion holes on trees by Monochamus alternatus:number of D.helophoroides adults)once in March for 3 consecutive years significantly rose the insect density by 426.16%-706.23%in 4 years.The increase was 5.26 to 8.06 times higher than without the release.[Conclusion]The experimented method significantly increased D.helophoroides population at the sites.The application conditions included,in addition to not clearing,cutting,or burning the diseased trees at the sites,releasing the local D.helophoroides of specific parental source,body size,and indoor breeding generations(activity)at the specified time,rate,and frequency.The implementation significantly accelerated the increase of the insect population and effectively helped control the pine wilt disease spread by M.alternatus infestation in the forest.关键词
花绒寄甲/松褐天牛/种群密度/释放技术/疫木处理Key words
Dastarcus helophoroides Fairmaire/Monochamus alternatus/population density/insect releasing method/treatment on infected trees分类
生物科学引用本文复制引用
陈元生,黄建林,罗致迪,范海元..林间花绒寄甲种群快速提升的影响因素研究[J].福建农业学报,2025,40(3):307-315,9.基金项目
江西省重点研发计划项目(20192BBF60017) （20192BBF60017）
江西省林业科技创新项目(创新专项[2023]22号、[2018]17号) （创新专项[2023]22号、[2018]17号）
