福建农林大学学报（自然科学版）2025，Vol.54Issue(6)：731-739,9.DOI:10.13323/j.cnki.j.fafu(nat.sci.).202412013
基于助剂优化的三氟吡啶胺喷施体系对松材线虫的防治效果
Bursaphelenchus xylophilus control by cyclobutrifluram foliar spray with optimized adjuvants
摘要
Abstract
[Objective]The absorption characteristics of cyclobutrifluram in Pinus massoniana and control efficacy of its exogenous application against Bursaphelenchus xylophilus were investigated,aiming to provide theoretical basis and practical guidance for large-scale control operations.[Method]Exogenous spraying of cyclobutrifluram,combined with 2 adjuvants(vegetable oil adjuvant and aerial spray adjuvant)at varying ratios,were administered to P.massoniana,for further evaluation on the control efficacy against B.xylophilus at 60 d post treatment.[Result](1)Residue analysis revealed that cyclobutrifluram concentrations in the xylem of P.mas-soniana branches ranged from 14.58 to 50.48 ng·g-1.The group receiving adjuvant by aerial spray exhibited slightly higher residual levels[(32.87±17.61)ng·g-1]compared to those in the group treated with vegetable oil adjuvant[(28.88±14.30)ng·g-1],though the difference was not statistically significant(P=0.078 4).A significant positive correlation was observed between residue level and application concentration(vegetable oil adjuvant:R=0.89,P=0.001 4;aerial spray adjuvant:R=0.81,P=0.008 4).(2)Cyclobutrifluram reduced the number of B.xylophilus in host tissues by 43%-90%(P=0.54),with reduction rate slightly grea-ter in the vegetable oil adjuvant group(43%-90%)than the aerial spray adjuvant group(60%-85%),though the difference was not statistically significant(P=0.68).A positive correlation was observed between the increase in B.xylophilus population and dilu-tion ratio of adjuvants,which was more pronounced in the aerial spray adjuvant group(R=0.33,P=0.23),but not significant in the vegetable oil adjuvant group(R=0.009,P=0.97).(3)Cyclobutrifluram significantly reduced the mortality of P.massoniana by 20%-60%(P=0.18),though without significant effect from the adjuvants.Mortality was negatively correlated with application con-centration,which was more pronounced in the aerial spray adjuvant group(R=-0.98,P=0.12)but insignificant in the vegetable oil adjuvant group(R=-0.76,P=0.45).[Conclusion]The effective absorption of cyclobutrifluram in P.massoniana can be en-hanced by the applicatin of adjuvants,leading to significantly suppressed growth of B.xylophilus and lower host mortality.关键词
松材线虫病/三氟吡啶胺/助剂/残留量/死亡率Key words
Bursaphelenchus xylophilus/cyclobutrifluram/adjuvant/residue/mortality分类
林学引用本文复制引用
王存利,何艺敏,蔡守平,宋高飞,徐清华,董玉光,苏军..基于助剂优化的三氟吡啶胺喷施体系对松材线虫的防治效果[J].福建农林大学学报（自然科学版）,2025,54(6):731-739,9.基金项目
福建省林业科技项目-省种苗攻关(ZMGG-0705). （ZMGG-0705）
