摘要
为探究防治检疫性林业有害生物松材线虫的高效杀线树干注射药剂,采用浸虫法测定了阿维菌素不同剂型的杀线活性,通过测定添加阿维菌素药剂至木材后的回收率,建立注干施用后药剂在松树体内残留的检测方法。实验结果表明,阿维菌素微乳剂LC50值和LC90值为31.8525 mg/L和158.9571 mg/L,乳油LC50值和LC90值为62.4806 mg/L和349.1620 mg/L,微乳剂的杀线效果好于乳油。添加不同质量浓度阿维菌素微乳剂和乳油至木材后的回收率效果良好,为日后不同剂型阿维菌素药剂林间注干施用后药剂在注干松树各部位的输导残留提供了一种有效的测定方法。
In order to explore the high efficient nematocide for trunk injection to prevent Bursaphelenchus xylophilus,a quarantine forestry pest,the nematicidal activity of different dosage forms of avermectin was determined by immersion method.By measuring the recovery rate after addition of avermectin chemicals to wood,a method was established to detect the residual of chemicals in pine tree after trunk injection.The experimental results showed that the LC50 and LC90 of avermectin microemulsion was 31.8525 mg/L and158.9571 mg/L,the LC50 and LC90 of emulsifiable concentrate was 62.4806 mg/L and 349.1620 mg/L,and the nematocidal effect of microemulsion was better than that of emulsifiable concentrate.The recovery rate effect was good after adding different concentrations of avermectin microemulsion and emulsifiable concentrate to the wood,which provided an effective method for determining the transport residues of different dosage forms of avermectin in different parts of pine trees after trunk injection in the future.
作者
李长强
叶建仁
Li Changqiang;Ye Jianren(College of Forestry,Nanjing Forestry University/Co-innovation Center for Sustainable Forestry in Southern China,Nanjing 210037,China)
出处
《植物检疫》
北大核心
2020年第6期14-18,共5页
Plant Quarantine
基金
国家重点研发计划课题(2018YFD0600203)。
关键词
阿维菌素
松材线虫
毒力测定
微乳剂
乳油
残留测定
avermectin
Bursaphelenchus xylophilus
determination of toxicity
microemulsion
emulsifiable concentrate
residue determination
作者简介
第一作者:李长强,E-mail:1961293595@qq.com;通信作者:叶建仁,E-mail:jrye@njfu.com.cn。
