摘要
为明确联苯肼酯施药后对叶螨产卵及所产卵的影响,在室内通过叶碟法比较了不同浓度联苯肼酯药液对朱砂叶螨和二斑叶螨雌成螨的杀螨活性、药后产卵变化及所产螨卵的孵化情况。结果表明:1.25~100.00 mg·L-1联苯肼酯对朱砂叶螨和二斑叶螨的雌成螨均具有显著杀螨活性,药后24 h的LC50分别为7.52和12.42 mg·L-1,药后2种叶螨的成螨产卵受到显著抑制,其产卵抑制率分别为27%~81%和10%~80%,产卵抑制中浓度分别为4.16和6.86 mg·L-1。2种叶螨药后所产螨卵的孵化率随联苯肼酯浓度的增大而显著降低,对药后所产卵的LC50分别为24.26和15.28 mg·L-1。因此,联苯肼酯在杀死成螨的同时也具有明显的产卵抑制作用,且药后所产螨卵的孵化也受到明显影响。
In order to ascertain the effect of bifenazate on spider mites oviposition and mite eggs. The acaricidal activities,oviposition changes and egg hatch under different concentration of bifenazate against Tetranychus cinnabarinus and T. urticae were compared by leaf disc method in indoor condition. The results indicated that 1. 25-100. 00 mg·L-1 bifenazate showed significantly acaricidal activities against T. cinnabarinus and T. urticae female adults with LC50 of 7. 52 and 12. 42 mg·L-1,respectively,and their oviposition were significantly inhibited with the oviposition inhibitory rate between 27% to 81% and 10% to 80%,and the median oviposition inhibitory concentration were4. 16 and 6. 86 mg·L-1,respectively. Moreover,hatchability significantly decreased with increasing bifenazate concentration,and the LC50 were 24. 26 and 15. 28 mg·L-1,respectively. Therefore,bifenazate not only killed adult mites,but also had a significant effect on oviposition inhibitory,and the hatching of sprayed mite eggs was also significantly affected.
出处
《浙江农业学报》
CSCD
北大核心
2017年第10期1692-1698,共7页
Acta Agriculturae Zhejiangensis
基金
国家自然科学基金项目(31560520)
云南省科技计划重点新产品项目(2015BB009)
关键词
联苯肼酯
杀螨活性
朱砂叶螨
二斑叶螨
产卵抑制
bifenazate
acaricidal activity
Tetranychus cinnabarinus
Tetranychus urticae
oviposition inhibitory
